The process or result of perfecting something

In a manner that cannot be bettered; perfectly.

plural of perfecting press

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

present participle of self-perfect

(number theory) A number that is the sum of all of its divisors except itself.

Perfect in appearance as with the subjects in paintings or photographs, without the common imperfections of real life.

A verb form indicating that an action or state has been completed at the present time, in the past, or shall be completed in the future.

(grammar) A tense that expresses action completed at some time in the future; in English it is formed by use of will have (or shall have) and a past participle

(grammar) A perfect tense that expresses action in the past (usually completed) with consequences in the present time.