Definition of radiant in English:



  • 1Sending out light; shining or glowing brightly.

    ‘a bird with radiant green and red plumage’
    • ‘The dazzling downtown locations are massive, dominated by skyscrapers whose light bathes the streets in a radiant glow.’
    • ‘The sun crept over the horizon, spreading radiant golden light across the rolling moorland that surrounded Whitby.’
    • ‘We compare the radiant blues and greens of our fragile planet to the blackness of the cosmos, and recognize the infinite preciousness of our lonely home.’
    • ‘The color is a radiant, bright light-scarlet and the aromas are filled with bittersweet cherries and strawberries.’
    • ‘The sky was clear, and the sun was bright and radiant.’
    • ‘When the sun is bright and the expansive lake shimmers radiant turquoise, walking through her yard is like being transported to another world.’
    • ‘The sun came out from behind a cloud and the entire world shone with warm and radiant delight.’
    • ‘His images are radiant with color, light and life, and his classic style of paintings evoke the very essence of some of the most delightful places on earth.’
    • ‘Kiato shook his head slightly, shaking off the daze and the uncomfortable feeling around his neck, then slowly got back to his feet, his eyes flashing a radiant forest green.’
    • ‘He evolved a highly poetic style of landscape using soft harmonious tones with radiant light effects created from carefully graded transparent washes.’
    • ‘Her image glittered in his mind, a radiant light that would guide him back out of the terror of his dreams and into the sane, rational world of the living.’
    • ‘The bright light was radiant with the morning rays of red, orange, pink, and gold, reflecting brilliantly on the glasslike water.’
    • ‘True to her word though she died on the Sunday morning, bathed in the radiant light of a spring sunrise.’
    • ‘Five hours and countless miles later, the darkness of the night was beginning to fade, as was the previously radiant shine from the stars.’
    • ‘Karya finally awoke to a weak light, nothing like the radiant shine in her now lost home.’
    • ‘I wanted you to see the beauty of the radiant moon falling across the water.’
    • ‘The contrast is brought across through imaginative use of light and radiant colours.’
    • ‘It enabled him to see beyond the crude populist image to the harsh realities that give stability and strength to Matisse's radiant vision of light and color.’
    • ‘In Lunarium, a chorus of flowers with milky white veins and carmine edges opens to receive the light of the radiant full moon high above.’
    • ‘The beautiful embroidery work and the radiant colour combinations are sure to make one stop and have a second look.’
    shining, bright, illuminated, lit, lighted, brilliant, gleaming, glowing, ablaze, luminous, luminescent, lustrous, incandescent, glittering, sparkling, coruscating, dazzling, flashing, shimmering
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    1. 1.1(of a person or their expression) clearly emanating great joy, love, or health.
      ‘she gave him a radiant smile’
      • ‘The sight of my mother, my beautiful, radiant mother, was more than I could handle while pregnant and without my eldest daughter.’
      • ‘Waugh's radiant face reflected the state of his inner soul.’
      • ‘And Rudolph found himself face to face with the most radiant girl he had ever seen.’
      • ‘She was radiant and she smiled the most when she was with him.’
      • ‘Joy made a radiant bride and the groom is a great guy, a lot like myself in character and in some ways also like Ann's father.’
      • ‘In the picture they eventually agreed on, he has just scored his first goal for Madrid at the Bernabeu and his expression is absolutely radiant.’
      • ‘I would twirl in the vast ballrooms in my ragged skirt, pretending I was the most radiant lady at the ball.’
      • ‘To this reporter, it is a matter of apples and oranges - both women have sensational figures; both women are radiant onstage.’
      • ‘Her smile was radiant and her eyes shone brightly.’
      • ‘He is radiant, dazzling and as happy to see us as we are to see him.’
      • ‘‘It's the most perfect baby in the entire world,’ says the radiant new mother.’
      • ‘I'm fond of Mrs. Johnson, who has a gentle southern accent and a radiant expression.’
      • ‘He stops his work and the face he turns towards you is radiant.’
      • ‘She looked absolutely radiant with joy in her period dress, spinning and twirling on the floor.’
      • ‘Who does not want a bright, white and radiant smile that could enliven one's face?’
      • ‘She was radiant with joy and her new husband seems like a great match for her.’
      • ‘He smiled a radiant, loving smile of relief when her eyes met his and she could see unshed tears in his eyes.’
      • ‘The radiant bride was given away by her brother and attended by a ‘best woman’ rather than bridesmaids.’
      • ‘She was radiant, her skin gleaming and her face bright and loving in a way that he'd never seen it in daily life - especially never turned in his direction.’
      • ‘Sean was radiant at the prospect of a new friend his age, and hugged Kat, too.’
    2. 1.2(of an emotion or quality) emanating powerfully from someone or something; very conspicuous.
      ‘he praised her radiant self-confidence’
      • ‘We served together on several oral exam committees, where he exhibited, in his soft Scots burr, gentleness with students as well as a radiant love for theology.’
      • ‘He is known for swinging unabashed through his corporate environment, baffling corridor lurkers with bright smiles and a radiant happiness with life.’
      • ‘You know that moment when really liking someone turns into a radiant love - overwhelming, a little frightening and almost exasperatingly fresh?’
      • ‘This is a worldview in which all doubts and dilemmas are solved through either divine intervention and/or the acceptance of God's radiant love.’
      • ‘The charm of his take on the situation is that the golden boy and girl expand their bubble of radiant happiness to let the waif in.’
      • ‘The lady and her radiant love welcomes him into her open arms.’
      • ‘Its root cause - a sense of identity narrowly defined by the physical body and self-limiting thoughts and emotions - is transformed into radiant equanimity.’
      • ‘Not only did they get slimmer, fitter and become more attractive human beings, but also they cheered up and blossomed into radiant self-confidence.’
      • ‘One can disdain the cult of personality, but one cannot dismiss the look of radiant delight on her friends' faces as they cluster around her.’
      • ‘Kuijken brings an excellent team of soloists together to produce a reading of radiant spiritual beauty and emotional depth.’
      • ‘Emanating radiant compassion toward all of her devotees, Ammachi is understood to be a manifestation of the Great Goddess on earth - a living Avatar.’
      • ‘Rebecca still had that radiant confidence that we'd uncovered within her a couple of weeks ago and I couldn't help but feel proud knowing that we'd helped her to achieve it.’
      • ‘She stared at the jewelry in awe, it's radiant beauty astounding her.’
      • ‘They seemed to bloom with such a passion and live with radiant beauty, until they died within a night a few days after they first flowered.’
      • ‘We are all greeting and hugging each other in a moment of pure, radiant joy.’
      • ‘The radiant beauty of the score, and the warm tenderness at the heart of it, are very moving.’
      • ‘How her face lights up with radiant joy when she gets her favorite treat!’
      • ‘She walks tall and has a radiant confidence and regal air that seems to exude from her.’
      • ‘The Reverend's writings on the Brahma viharas are greatly inspired by the radiant Compassion of Kuan Yin.’
      • ‘Son Of A Preacher Man was the album's most successful offspring but every track sparkles with a radiant beauty.’
  • 2[attributive] (of electromagnetic energy, especially heat) transmitted by radiation, rather than conduction or convection.

    ‘plants convert the radiant energy of the sun into chemical energy’
    • ‘The annual deficit of radiant energy has to be balanced by additions of heat from lower latitudes; otherwise the ice sheets would become progressively colder.’
    • ‘In the tandoor, the breads (necessarily flat in shape) are slapped onto the vertical wall, where they bake quite quickly by a combination of radiant heat and convection.’
    • ‘In the Sun, the process of thermonuclear fusion converts atoms of hydrogen into helium atoms, producing radiant energy.’
    • ‘Additionally, a number of other fully-feathered extant birds can readily absorb and use incident radiant solar energy.’
    • ‘There are many forms of energy, each of which can be classified into three categories: radiant energy, kinetic energy, and potential energy.’
    • ‘In convective and radiant heat transfer, the amount of heat transferred is usually a complex function of the temperatures of the two regions involved.’
    • ‘Patchy clouds in the middle atmosphere appear black because they block the radiant heat.’
    • ‘The physical parameters, relative humidity, and mean radiant temperature were also calculated.’
    • ‘During the day, the sun's radiant heat warms the earth.’
    • ‘Thermal energy from infrared, radiant heat sources has been used to treat chronic human wounds with decreasing frequency during the past 25 years.’
    • ‘Passive radiant heat will keep the room comfortably warm.’
    • ‘A pizza stone is another way to create the radiant heat necessary for making a good crust, but you'll need to be a bit more resourceful to provide the necessary moisture.’
    • ‘When a lot of the sun's radiant energy makes it to Earth, it transmits energy to the atoms and molecules in the air and ground.’
    • ‘More importantly, these animals may also take advantage of heat saving postures that could potentially lower radiant heat losses to cold night skies.’
    • ‘The approach relies on the assumption that the largely unknown mechanisms presently linking radiant energy input and species richness will not change in concert with climate.’
    • ‘This cool air could be eliminated with low-e glazing, which has good insulating qualities and, thus, higher radiant temperatures on the glass surface.’
    • ‘Ander sat in the galley, enjoying the crackling, radiant warmth of the stoves, sipping the hot, sweet-spicy beverage that was the favourite of sailors.’
    • ‘Low-e glazings use a thin, metallic oxide coating deposited on the glass to reduce radiant heat loss through the window.’
    • ‘The distance to the target, however, must be small for us to feel the heat because lightning's radiant energy pales compared with the Sun.’
    • ‘Electric radiant heat was commonly installed in homes built from the mid-1950s through the early '70s.’
    1. 2.1(of an appliance) designed to emit radiant energy, especially for cooking or heating.
      ‘a radiant heater’
      • ‘Additional heating is provided by a hydronic radiant system embedded in the top level's poured-earth floor.’
      • ‘These blankets then are covered with sheets that are warmed by radiant heat lamps until the neonate is brought into the room to prevent heat loss through conduction.’
      • ‘At the top is a 50m high radiant heat exchanger to cope with cooling loads.’
      • ‘Consequently, incubator care is associated with less insensible water loss, and lower fluid requirements, than nursing infants in open cots under radiant heaters.’
      • ‘A typical radiant heating and cooling system starts with a high-performance glazing system, integrated with light shelves and exterior shades as needed.’
      • ‘Unstable infants may be observed under the radiant warmer for several hours, with attention to increased fluid losses.’
      • ‘According to O'Donnell, the even feeling provided by radiant floor heating is the most common reason people choose the system.’
      • ‘This is the Hydronic radiant heating system that saves huge energy as well as money on heating larger areas of your home/office environment.’
      • ‘Besides discouraging plant growth, the opaque toldo absorbs sunlight, becoming a huge radiant heater.’
      • ‘During induction and the preparatory phase, radiant heat lamps are used to maintain the neonate's temperature and prevent chilling.’
      • ‘A portable radiant heater had become dislodged and ignited the blaze.’
      • ‘We installed a radiant heater, and it usually runs only at night when it's really cold outside.’
      • ‘Most of the radiant style heaters do not need to be vented to the outside, which greatly simplifies installation.’
      • ‘In a radiant floor heating system warm water circulates through tubing beneath the floor.’
      • ‘The radiant heat system circulates hot water through tubing embedded in the concrete floors to provide an extremely even heat.’
      • ‘The exchange transfusion should be done under a radiant warmer using sterile technique.’
      • ‘Each of the radiant heater beds is equipped with a portable oxygen tank.’
      • ‘To maintain body temperature, the infant is placed in an incubator or on a radiant heater bed.’
      • ‘Clinical studies have reported positive outcomes following treatment of chronic venous insufficiency ulcers with the noncontact radiant heat system.’
      • ‘Preterm infants should be delivered into warm towels, dried, and transferred to a dedicated neonatal resuscitation platform or trolley with an integral radiant heater.’


  • 1A point or object from which light or heat radiates, especially a heating element in an electric or gas heater.

    ‘I sat down by my hissing gas fire—one of the radiants was missing’
    1. 1.1Astronomy
      A radiant point.
      ‘don't assume that you should stare toward the radiant to see the most meteors’
      • ‘The Perseid radiant will just be rising above the north-northeastern horizon around 9 PM.’


Late Middle English: from Latin radiant- emitting rays, from the verb radiare (see radiate).