An abbreviation of a person's name, constructed by taking the initial letters of first, last, and sometimes middle name(s). See monogram

Third-person singular simple present indicative form of initial

plural of initial

At the beginning.

Chronologically first, early; of or pertaining to the beginning, cause or origin. / Spatially first, placed at the beginning, in the first position; especially said of the first letter of a word.

The first letter of a word or a name. / In plural, the first letter of each word of a person's full name considered as a unit.

(transitive) To sign one's initial(s), as an abbreviated signature.

simple past tense and past participle of initialize

present participle of initialize

plural of initiation