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sun

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The sun is the star that is the central object in the solar system. (noun)

An example of sun is what rises in the east and sets in the west each day.

Sun means to be exposed to the rays of the central object in the solar system. (verb)

An example of sun is to tan at the beach.

See sun in Webster's New World College Dictionary

noun

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
the heat or light of the sun: to lie in the sun
any star that is the center of a planetary system
something like the sun, as in warmth or brilliance

transitive verb sunned, sunning

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

intransitive verb

to sun oneself

noun

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

Also sun hemp

Sunday

See sun in American Heritage Dictionary 4

sun

noun

often Sun A star that is the basis of the solar system and that sustains life on Earth, being the source of heat and light. It has a mean distance from Earth of about 150 million kilometers (93 million miles) a diameter of approximately 1,390,000 kilometers (864,000 miles) and a mass about 330,000 times that of Earth.
A star that is the center of a planetary system.
The radiant energy, especially heat and visible light, emitted by the sun; sunshine.
A sunlike object, representation, or design.

verb sunned sunned, sunning sun·ning, suns

verb, transitive

To expose to the sun's rays, as for warming, drying, or tanning.

verb, intransitive

To expose oneself or itself to the sun.

Origin: Middle English, from Old English sunne; see sāwel- in Indo-European roots.

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sun

cutaway of the sun

See sun in Ologies

Sun

See also astronomy; climate; cosmology; equator; light; planets; weather.

celidography

Archaic. a description of the surface markings on a planet or the spots on the sun.

coronagraphy

the observation of the corona of the sun by use of a telescope modifled to simulate an eclipse. —coronagraphic, adj.

heliodon

an instrument used in astronomy to show the apparent movement of the sun.

heliography

1. the measurement of the duration and intensity of sunlight.

2. the system or process of signaling by reflecting the sun’s rays in a mirror.

3. an early photographic process involving coated metal plates exposed to sunlight. —heliographer, n. —heliographic, heliographical, adj.

heliolatry

the worship of the sun. — heliolator, n.

heliology

Archaic. the science of the sun. — heliologist, n.

heliomania

an abnormal love of the sun.

heliophobia

1. an abnormal fear of sunlight.

2. an avoidance of sunlight.

helioseismology

the study of motions of the solar surf ace.

heliotherapy

a method of treating illness by exposure to the rays of the sun.

pyrheliometer

an instrument for measuring the intensity of the sun’s radiation. —pyrheliometric, adj.

radiometer

an instrument for measuring the intensity of radiant energy, composed of vanes which rotate at speeds proportionate to the intensity of the energy source. —radiometric, adj.

radiometry

the measurement of radiant energy by means of a radiometer. —radiometric, adj.

radiophony

the transformation of radiant energy into sound.

siriasis

1. sunstroke.

2. Obsolete, a sun bath or exposure to the sun for curative purposes.

solarism

1. the explanation of myths by reference to the sun or the personifi-cation of the sun, as the hero as sunfigure.

2. an overreliance on this method of interpretation. —solarist, n.

solarium

a room designed and situated so as to receive the maximum amount of sunlight.