v. t. [ imp. & p. p. Annotated; p. pr. & vb. n. Annotating. ] [ L. annotatus; p. p. of annotare to annotate; ad + notare to mark, nota mark. See Note, n. ] To explain or criticize by notes; as, to annotate the works of Bacon. [ 1913 Webster ]

v. i. To make notes or comments; -- with on or upon. [ 1913 Webster ]

n. 1. the act of adding notes.
Syn. -- annotation [ WordNet 1.5 ]

n. [ L. annotatio: cf. F. annotation. ] 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. [ 1913 Webster ]

n. An annotator. [ R. ] [ 1913 Webster ]

a. Characterized by annotations; of the nature of annotation. [ 1913 Webster ]

n. [ L. ] A writer of annotations; a commentator. [ 1913 Webster ]

a. Pertaining to an annotator; containing annotations. [ R. ] [ 1913 Webster ]