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.

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

plural of perfect metal

(chemistry, obsolete) Any metal, such as gold or silver, not readily oxidized by heat and air.

(Christianity) Advice as to a means of striving for moral perfection.

Correct in every word. / (UK, theater) Having memorized one's lines perfectly.