Definition of ruler in US English:

ruler

noun

  • 1A person exercising government or dominion.

    • ‘Kings were expected to be rulers, law givers, judges, leaders of the war band and protector of the Church and people.’
    • ‘Hence the exercise of the ruler's authority could be decisive in determining the outcome of local rivalries.’
    • ‘The original statue of Infant Jesus was sent there as a wedding present to the local ruler by the King of Spain in the 17th Century.’
    • ‘In 1952, Gaj Singh was crowned as the 38th ruler of the Rathore dynasty founded in the 13th Century.’
    • ‘The rulers of the Chakri dynasty, who succeeded the kings of Ayyuthaya, assumed the throne name of Rama, a practice that continues to this day.’
    • ‘King in this Middle Eastern context meant a ruler who would deal despotically with them, a governor quite different from the constitutional rulers of Europe.’
    • ‘He was the supreme ruler, the king, the emperor and his authority was absolute.’
    • ‘Her father Nawab Hamidullah Khan was the ruler of second most important Muslim princely state after Hyderabad.’
    • ‘I have hardly ever agreed with what Jeremy has written, but I do think that it's wonderful that we live in a free society where we can openly criticise our leaders and rulers.’
    • ‘She advised kings & rulers and worked for reconciliation among peoples.’
    • ‘Many Rajput kings retained a status as rulers of princely states under the British.’
    • ‘The last king of this dynasty was a ruler named Sher Daulat.’
    • ‘Prior to the modern period, states were justified by reference to their rulers, their dynasties, and their religion.’
    • ‘Once feudal lords, the Malay rulers now perform a largely ceremonial role.’
    • ‘Soon there will be another chance for citizens to choose a ruler and the present leader is using all at his disposal to win power again.’
    • ‘They have instead exchanged their colonial rulers or puppet kings for corrupt local bourgeois cliques.’
    • ‘Luanda on the Angola coast was a Portuguese town from which they tried to exercise control over African rulers inland.’
    • ‘In February workers overthrew the dictatorial ruler, the Tsar.’
    • ‘The traditional Malay rulers and the King were disempowered, when some scandals offered a political opportunity to do so.’
    • ‘Kings and rulers are not simply those who are chosen but those who know how to rule.’
    leader, sovereign, monarch, potentate, crowned head, head of state
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    1. 1.1Astrology
      another term for ruling planet
      • ‘Your planetary ruler, Saturn, squares the Virgo Moon on Thursday.’
      • ‘It's probably aggravating that your planetary ruler is the speediest and least linear of the lot, Mercury.’
      • ‘As a Pisces, your planetary ruler is Neptune, god of the oceans.’
      • ‘The moon, planet of emotions, is your ruler, making you extremely sensitive to the moods of others.’
      • ‘Saturn, your ruler, gives you the discipline to meet challenges head-on.’
      • ‘Your planetary ruler Mercury in Cancer will give you insights into how to do this with feeling, understanding and compassion.’
      • ‘The sun, center of our solar system, is your ruler, giving you a love of the limelight.’
      • ‘Your planetary ruler Venus is in a tricky and variable mood right now.’
  • 2A straight strip or cylinder of plastic, wood, metal, or other rigid material, typically marked at regular intervals, to draw straight lines or measure distances.

    • ‘The bundle of case papers I was sent at the start of this case was so large it could be measured with a ruler.’
    • ‘Draw a line with a pencil and a ruler, and the computer registers it.’
    • ‘The size of swelling and redness were measured with a plastic ruler, while the child's reaction to movement of the limb or to touch of the site was graded with a standard scale.’
    • ‘This enabled the school to give every poor pupil two pencils, a ruler, two pens, a rubber and two exercise books.’
    • ‘The size of the lesion must be measured with a ruler at presentation and on subsequent visits to allow an accurate assessment of size over time.’
    • ‘She had a giant plastic ruler she would smack on the desk to quiet people in situations like that.’
    • ‘As she lined up the ruler on the map, he looked over her shoulder and shrugged.’
    • ‘Using the metal ruler as a straight edge cut 10 1-inch right triangles with the craft knife.’
    • ‘These are exact shapes that look like they were made with a ruler or precise drawing instrument.’
    • ‘Take a ruler and measure off these distances at the top of the drapes with a straight pin.’
    • ‘Obviously, the aim should be to cut at regular intervals but don't start getting your ruler out.’
    • ‘Clear plastic rulers and quilting templates can be a headache to store.’
    • ‘Lay a ruler straight across the front and back pattern pieces.’
    • ‘She would take out a ruler and measure exactly what I asked for, make a cut and show me what she had cut.’
    • ‘The length of each tendon was measured with a millimeter ruler.’
    • ‘In a full analysis, Christina uses a ruler and protractor to measure the letters and angles.’
    • ‘To be certain, take a ruler and measure from the bottom crease of each finger to the tip.’
    • ‘I then showed them how to use a white pencil to trace circles of various sizes and straight lines with rulers.’
    • ‘After tamping a few square feet, use a yardstick or a ruler to measure the tamped depth.’
    • ‘Most practitioners are aware of and use traditional methods, such as tracings and rulers, to evaluate wound surface area.’
    system, standard, units, scale
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Pronunciation

ruler

/ˈro͞olər//ˈrulər/