Astronomy



GRE TOEFL 考研

解释

GRE 红宝书

• n. 天文学
• ［英］ n. 天文学 ( scientific study of the sun, moon, stars, planets)
• ［记］ astro ( 星星) +nomy ( 学科) -> 研究星星的学科 -> 天文学
• ［同］ 派生词: astronomer ( n. 天文学家) ) ; astronomical ( adj. 天文学的)

Webster Collegiate

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

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