What does ad- mean in Latin?

ad-, a prefix, means “to; usually prefixed to verbs, in which cases it often has the effect of intensifying the verbal action”.

LATIN DICTIONARYLexicon Latīnum

prefix

ad-

Meaning

morphemeto
morphemeusually prefixed to verbs, in which cases it often has the effect of intensifying the verbal action

Origins

Prefixed form of the preposition ad (“to, towards”). This prefix also appears in other Italic languages, entailing the reconstruction of Proto-Italic *ad- as a prefix.

Quick answers

What does ad- mean in Latin?: ad-, a prefix, means “to; usually prefixed to verbs, in which cases it often has the effect of intensifying the verbal action”.