a combining form with the meanings âheight,â âtip end,â âextremities of the body,â used in the formation of compound words: acrophobia. Also, especially before a vowel, acr-. Origin of acro-. < Greek, combining form of Ã¡kros topmost, highest; akin to Latin Äcer sharp.
â¢ CANTUS FIRMUS (noun) The noun CANTUS FIRMUS has 1 sense: 1. a melody used as the basis for a polyphonic composition. Familiarity information: CANTUS FIRMUS used as a noun is very rare. Dictionary entry details.
The flexor pollicis longus (FPL, Latin flexor, bender; pollicis, of the thumb; longus, long) (/ Ë f l É k s É r Ë p É l Éª s Éª s Ë l É Å É¡ É s /)) is a muscle in the forearm and hand that flexes the thumb. It lies in the same plane as the flexor digitorum profundus.