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单词 perigeal
释义

WordReference Random House Learner's Dictionary of American English © 2024
per•i•gee /ˈpɛrɪˌdʒi/USA pronunciation   n. [countable]
  1. Astronomythe point in the orbit of the moon or a satellite at which it is nearest to the earth.Compare apogee.
See -geo-.
WordReference Random House Unabridged Dictionary of American English © 2024
per•i•gee  (per′i jē′),USA pronunciation n. [Astron.]
  1. Astronomythe point in the orbit of a heavenly body, esp. the moon, or of an artificial satellite at which it is nearest to the earth. See diag. under apogee. 
  • Greek perígeion (sēmeîon limit), neuter of perígeios near, of the earth, equivalent. to peri- peri- + -geios, adjective, adjectival derivative of gaîa, gê the earth
  • Neo-Latin perigēum, perigaeum
  • French perigée
  • 1585–95
per′i•ge′al, per′i•ge′an, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
perigee /ˈpɛrɪˌdʒiː/ n
  1. the point in its orbit around the earth when the moon or an artificial satellite is nearest the earth
Etymology: 16th Century: via French from Greek perigeion, from peri- + gea earth

ˌperiˈgean, ˌperiˈgeal adj
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更新时间：2024/11/13 15:26:07