sun

I. noun Etymology: Middle English sunne, from Old English; akin to Old High German sunna sun, Latin sol — more at solar Date: before 12th century 1. a. often capitalized the luminous celestial body around which the earth and other planets revolve, from which they receive heat and light, which is composed mainly of hydrogen and helium, and which has a mean distance from earth of about 93,000,000 miles (150,000,000 kilometers), a linear diameter of 864,000 miles (1,390,000 kilometers), and a mass 332,000 times greater than earth b. a celestial body like the sun ; star 2. the heat or light radiated from the sun <

played in the sun all day

> 3. one resembling the sun (as in warmth or brilliance) 4. the rising or setting of the sun <

from sun to sun

> 5. glory, splendor II. verb (sunned; sunning) Date: 15th century transitive verb to expose to or as if to the rays of the sun intransitive verb to sun oneself