Question

Astronomy

Accepted Answer

Merriam-Webster's Collegiate Dictionaryas·tron·o·my \ə-ˈsträ-nə-mē\ noun (plural -mies) ETYMOLOGY  Middle English astronomie, from Anglo-French, from Latin astronomia, from Greek, from astr- + -nomia -nomy
 DATE  13th century
: the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties
English Etymologyastronomy  c.1200, from O.Frhttp://O.Fr. astronomie, from L. astronomia, from Gk. astronomia, lit. "star arrangement," from astron "star" (see astro-) + nomos "arranging, regulating," related to nemein "to deal out" (see numismatics). Used earlier than astrology and originally including it.
Oxford Advanced Learner's Dictionary-牛津双解-OALD7astronomyas·tron·omy / E5strCnEmi; NAmE E5strB:n- / noun[U]   the scientific study of the sun, moon, stars, planets, etc.   天文学
Webster's Third New International Dictionary, Unabridgedas·tron·o·my\-mē, -i\ noun(-es)Etymology: Middle English astronomie, from Old French, from Latin astronomia, from Greek, from astronomos astronomer (from astr- + nomos law) + -ia -y — more at nimble1. : the science that treats of the celestial bodies, of their positions, magnitudes, motions, distances, constitution, physical condition, mutual relations, history, and destiny — formerly used as synonymous with astrology2. : a treatise on this science

From Astronomy Noun As·Tron·O·My Middle English From Latin