1. a prefix meaning “below,” used, with second elements of any origin, in the formation of compound words: infrasonic; infrared.


  1. below; beneath; afterinfrasonic; infralapsarian

word-forming element from Latin infra (adv., prep.) “below, underneath, beneath; later than, smaller, inferior to,” from PIE *ndher “under” (cf. Sanskrit adnah “below,” Old English under “under, among;” see under). Opposed to super-. Its use as a prefix was rare in Latin.


  1. Inferior to, below, or beneath:infrasonic.
62 queries 0.238