Definition of posigrade in English:

posigrade

adjective

Astronautics Astronomy
  • 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

Astronautics Astronomy
  • In a posigrade direction.

Origin

1960s. From posi- + -grade, after retrograde.

Pronunciation

posigrade

/ˈpɒzɪɡreɪd/