Wordnet 3.0
NOUN (2)
1. a salt or ester of acetic acid;
[syn: acetate, ethanoate]
2. a fabric made from fibers of cellulose acetate;
[syn: acetate rayon, acetate]
The Collaborative International Dictionary of English v.0.48:
Acetate \Ac"e*tate\, n. [L. acetum vinegar, fr. acere to be sour.] (Chem.) A salt formed by the union of acetic acid with a base or positive radical; as, acetate of lead, acetate of potash. [1913 Webster]

