Definition

To put an initial to; to mark with an initial of initials. [R.]

Other Definitions

This word also has 2 other definitions:

INITIAL (adjective)

1. Of or pertaining to the beginning; marking the commencement; incipient; commencing; as, the initial symptoms of a disease. 2. Placed at the beginn...

INITIAL (noun)

The first letter of a word or a name.