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.
Actus reus is the Latin term used to describe a criminal act. Every crime must be considered in two parts-the physical act of the crime (actus reus) and the mental intent to do the crime (mens rea). To establish actus reus, a lawyer must prove that the accused party was responsible for a deed prohibited by criminal law.