adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A small rocket that gives additional forward thrust.

Adjective

1. 1
   Synonym of prograde.

Synonyms

All synonyms

prograde

Etymology

From posi- + -grade (“direction”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.