单词 | posigrade |
释义 | posigrade/ˈpɒzɪɡreɪd/Astronautics and Astronomy adjective Designating or exhibiting motion in the same direction as some existing motion; especially designating or exhibiting motion of a satellite in the same direction as the rotation or orbit of the primary, or as the direction prevailing in the solar system (i.e. clockwise as seen from north of the ecliptic). Opposed to retrograde. adverb In a posigrade direction. Origin1960s. From posi- + -grade, after retrograde. |
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