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.
Trismus, often called lockjaw, is hypomobility of the mouth, i.e. where you have a restricted and limited range-of-motion of the mouth. Trismus has a variety of causes, and can occur from nerve, muscle, or joint problems. Trismus or lockjaw is an early symptom of tetanus, but is most frequently caused by other conditions.