annotation Meaning, Definition & Usage

  1. noun a comment or instruction (usually added)
    note; notation.
    • his notes were appended at the end of the article
    • he added a short notation to the address on the envelope
  2. noun the act of adding notes
    annotating.

WordNet

An`no*ta"tion noun
Etymology
L. annotatio: cf. F. annotation.
Definitions
  1. A note, added by way of comment, or explanation; -- usually in the plural; as, annotations on ancient authors, or on a word or a passage.

Webster 1913