(music) an interval that is either a unison, fourth, fifth, or an octave

(music) an interval that has no difference between two notes

plural of perfect unison

plural of perfect octave

plural of perfecting press

A press in which the printing on both sides of the paper is completed in one passage through the machine.

(Christianity) An epithet of the Holy Spirit.

plural of s-perfect

plural of v-perfect

(linguistics) A perfect stem of a Latin verb which has been formed by adding a v or u to the end of the present stem.