'Initials' definitions:

Definition of 'Initials'

From: GCIDE
  • Initials \In*i"tials\, n. pl. The first letters of a person's first and last name, and sometimes also the first letters of the middle name or names; as, sign your initials in the margin; people identified only by their initials. [PJC]

Synonyms of 'initials'

From: Moby Thesaurus