Meaning of INITIAL in English

noun the first letter of a word or a name.

2. initial ·vt to put an initial to; to mark with an initial of initials.

3. initial ·adj placed at the beginning; standing at the head, as of a list or series; as, the initial letters of a name.

4. initial ·adj of or pertaining to the beginning; marking the commencement; incipient; commencing; as, the initial symptoms of a disease.

Webster English vocab.      Английский словарь Webster.