Main definitions of tropic in English

: tropic1tropic2

tropic1

noun

  • 1The parallel of latitude 23°26ʹ north (tropic of Cancer) or south (tropic of Capricorn) of the equator.

    • ‘The vineyard area extends from the tropic of Capricorn in the north to the 40th parallel in the south.’
    • ‘These are birds of the Antarctic and never fly North of the tropic of Capricorn.’
    • ‘North of the tropic of Capricorn, the sun will be in the southern sky during summer.’
    • ‘The Ellsworth Base lay above the Antarctic sea along what once was the tropic of Capricorn.’
    • ‘The trade has had a big impact on the meat industry, especially in the top end where only two abattoirs remain open north of the tropic of Capricorn.’
    1. 1.1Astronomy
      Each of two corresponding circles on the celestial sphere where the sun appears to turn after reaching its greatest declination, marking the northern and southern limits of the ecliptic.
      • ‘Then he briefly describes the four principal circles of the celestial sphere: equator, zodiac, and the two tropic circles.’
      • ‘A tropic point is the sun's position on the celestial sphere at the time of a solstice.’
      • ‘Accounts of the celestial sphere typically refer to other circles on its surface, including the arctic and Antarctic circles, the zodiac, tropics, and the solstitial and equinoctial colures.’
    2. 1.2The region between the tropics of Cancer and Capricorn.
      • ‘Generally, breeding seasons tend to be longer in the tropics than in the temperate zone.’
      • ‘Transfusion-induced malaria continues its resurgence throughout much of the tropics and subtropics.’
      • ‘As a result, shells are comparatively thick and ornate in the tropics, and thin and plain at temperate and polar latitudes.’
      • ‘It is extensively cultivated in marginal rainfall areas of the tropics and subtropics, and selected varieties are widely grown in temperate climates.’
      • ‘The retreat of some taxa to the tropics and subtropics is partly explained by climatic cooling beginning in the Oligocene.’
      • ‘Each subtropical gyre is created by mountainous flows of air moving from the tropics toward the polar regions.’
      • ‘The Indica group is found in lowland paddies of the tropics.’
      • ‘Common in the tropics, many species of bamboo grow in temperate climates as well.’
      • ‘Since we all stand to lose if the rich biological capital of the tropics is eroded, this is our problem too.’
      • ‘The worm commonly known as dog heart worm, is widely dispersed and found in the tropics, subtropics and temperate zones.’
      • ‘In the tropics, you can still find other, less desirable banana varieties, mainly grown as a starchy food staple rather than a sweet treat.’
      • ‘Typhoid fever continues to be a global health problem, especially in the tropics and subtropics.’
      • ‘It is mainly cultivated for its dry seeds and green vegetable in dry areas of the tropics and subtropics.’
      • ‘The proportions may be different in the polar regions and the tropics.’
      • ‘The group is normally confined to the tropics but some species are found in the temperate latitudes of the southern hemisphere.’
      • ‘Even in the tropics the water is rarely at body temperature so you will eventually lose heat.’
      • ‘Sometimes you will find the best kayaking tours in the tropics or the ocean.’
      • ‘Between 1970 and 2004 the average sea surface temperature in the tropics rose nearly 1 degree.’
      • ‘This sets up a system of interconnected deep and shallow currents that transport heat from the tropics to higher latitudes.’
      • ‘Even if you don't live in the tropics, you can enjoy exotic tropicals in your garden.’

adjective

  • another term for tropical
    • ‘Because humid tropic and sub-tropic areas sustain tree growth at a rate three times that of temperate zones - thus tripling the carbon dioxide-sequestering effect - many projects are initiated in these regions.’
    • ‘At one point during his childhood, a new relationship of his mother's took him out of all the gray bleakness to a veritable tropic isle off the coast of the Carolinas.’
    • ‘Arguably, one of the best-kept secrets on the Cape Peninsula is that here, you find more species of plants acre for acre than probably any other area on the planet, surpassing even tropic rainforests in diversity.’
    • ‘‘We've offered to improve the road, but the Navy won't let us,’ he shouted above the chirping of tiny frogs and the thwack of thick tropic brush against the windows.’
    • ‘Having moved to the tropic island to please his young bride and her family - Maximo, had always been, in his own way, homesick for the beauty and charm of ‘Italia’.’
    • ‘The terms began to consume my imagination, a pataphysical extravaganza of accumulating works & fields absorbed into this tropic zone without benefit of underlying unity of perspective.’
    • ‘So rarely are Polynesian, Micronesian, or Melanesian news items featured in the US media, that the image of dreamy tropic islands persists in the western imagination.’
    • ‘I had visions of palm trees and blue lagoons and snorkelling under a tropic sky.’
    • ‘Why is it so important to have a botanical garden in the wet tropic area of Australia?’
    • ‘Insects have adapted to nearly every ecological niche available, from arctic to tropic and mountaintop to river bottom.’
    • ‘Take for example a society in a desert where water is very scarce and at the same time consider a society that dwells in a tropic setting where water is plentiful.’
    • ‘See the pyramids along the Nile. Watch the sun rise on a tropic isle.’
    • ‘Bananas are typically thought of as a dessert course while the starchy plantains are cooked before eating and are considered a major staple of the tropic countries.’
    • ‘As the blistering midday sun slowly arced across the powder-blue tropic skies, temperatures soared to stifling, triple-digit figures.’
    • ‘But in her head, she was far, far away in an unknown tropic land with Abe.’
    • ‘They watched as white smoke drifted lazily upward in the humid tropic air.’
    • ‘Due to the variation of conditions along the route - from tropic to arctic - it is convenient to dress in layers you can either shed or add on.’
    • ‘After surviving their first two years on an uncharted Pacific island, our seven stranded castaways continue to ponder and pine after the day they'll be rescued from their tropic island nest.’
    • ‘A native of the tropic Americas, the cattleyas are a pseudobulb type and considered an orchid with training wheels.’
    • ‘He had known happiness, too, in Harlem, joy that glowed gloriously upon him like the high-noon sunlight of his tropic island home.’

Origin

Late Middle English (denoting the point on the ecliptic reached by the sun at the solstice): via Latin from Greek tropikos, from tropē turning from trepein to turn.

Pronunciation:

tropic

/ˈträpik/

Main definitions of tropic in English

: tropic1tropic2

tropic2

adjective

  • 1Biology
    Relating to, consisting of, or exhibiting tropism.

    • ‘In plant terms these are familiar growth and development phenomena, such as de-etiolation, flower induction, wind sway response, regeneration, induced bud break/germination, tropic bending, etc.’
    • ‘At the multicellular level, tropic responses of the shoots and roots of flowering plants have been extensively studied.’
    • ‘Gibberellins are a class of plant hormones that exert profound and diverse effects on plant growth and development and that have been implicated in tropic growth responses since the 1970s.’
    • ‘Early red and green algae may have been unable to radiate 1,500 MYA because of physical factors such as nutrient conditions or tropic competition.’
    • ‘The tropic response represents a growth response to altered auxin levels, involving growth stimulation and growth inhibition on opposite sides of the responding organ.’
    • ‘Charles Darwin performed early auxin experiments, observing the effects of a hypothetical substance modulating plant shoot elongation to allow tropic growth toward light.’
  • 2Physiology

    variant spelling of trophic

Pronunciation:

tropic

/ˈträpik/