| 单词 | semiminor axis |
| 释义 | semiminor axis in American English (ˈsɛmɪˈmaɪnər) Astronomy one half of the shorter axis of an elliptical orbit semiminor axis in American English (ˈsemiˈmainər, ˈsemai-, ˌsemi-, ˌsemai-) noun 1. Geometry one half the minor axis of an ellipse 2. Astronomy one half the minor axis of the ellipse that one celestial body describes around another, as a planet around the sun Word origin [1925–30; semi- + minor]This word is first recorded in the period 1925–30. Other words that entered Englishat around the same time include: decibel, dropout, gimmick, hot spot, turnaroundsemi- is a combining form borrowed from Latin, meaning “half,” freely prefixed to Englishwords of any origin, now sometimes with the senses “partially,” “incompletely,” “somewhat”.Other words that use the affix semi- include: semiautomatic, semidetached, semimonthly, semisophisticated |
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