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sun1 definition

sun (sun)

noun

  1. the self-luminous, gaseous central star of the solar system: magnitude, -26; mean distance from the earth, c. 149.6 million km (c. 93 million mi); diameter, c. 1.4 million km (c. 864,000 mi); mass, c. 332,000 times that of the earth; volume, c. 1.3 million times that of the earth; mean density, c. 0.25 times that of the earth; central temperature, c. 15 to 20 million degrees K; surface temperature, c. 6,000°K; rotational period, c. 27 earth days: with the
  2. the heat or light of the sun to lie in the sun
  3. any star that is the center of a planetary system
  4. something like the sun, as in warmth or brilliance

Etymology: ME sunne < OE, akin to Ger sonne, Goth sunnō < IE *sun-, *swen-, var. of base *sāwel- > L sol, Gr hēlios

transitive verb sunned, sunning sun′·ning

to expose to the sun's rays; warm, dry, bleach, tan, etc. in or as in the sunlight

intransitive verb

to sun oneself
sun Idioms

from sun to sun

Archaic from sunrise to sunset

place in the sun

a prominent or favorable position

under the sun

on earth; in the world
sun2 definition

sun (sun)

noun

  1. an East Indian annual plant (Crotalaria juncea) of the pea family, grown for its bast fiber used in making rope, bagging, cigarette papers, etc.
  2. its fiber

Etymology: Hindi san < Sans śaṇa, hempen

Sun definition

Sun

Sunday

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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