NOUN (1)

1. a salt or ester of carbonic acid (containing the anion CO3);


VERB (2)

1. turn into a carbonate;

2. treat with carbon dioxide;
- Example: "Carbonated soft drinks"

The Collaborative International Dictionary of English v.0.48:

Carbonate \Car"bon*ate\, n. [Cf. F. carbonate.] (Chem.)
   A salt or carbonic acid, as in limestone, some forms of lead
   ore, etc.
   [1913 Webster]

WordNet (r) 3.0 (2006):

carbonate
    n 1: a salt or ester of carbonic acid (containing the anion CO3)
    v 1: turn into a carbonate
    2: treat with carbon dioxide; "Carbonated soft drinks"