·noun The first letter of a word or a name.
II. Initial ·vt To put an initial to; to mark with an initial of initials.
III. Initial ·adj Placed at the beginning; standing at the head, as of a list or series; as, the initial letters of a name.
IV. Initial ·adj Of or pertaining to the beginning; marking the commencement; incipient; commencing; as, the initial symptoms of a disease.