Wiktionary
carboxymethyl cellulose
n. (alternative spelling of carboxymethylcellulose English)
WordNet
carboxymethyl cellulose
n. an acid derivative of cellulose
Wikipedia
Carboxymethyl cellulose
Carboxymethyl cellulose (CMC) or cellulose gum is a cellulose derivative with carboxymethyl groups (-CH-COOH) bound to some of the hydroxyl groups of the glucopyranose monomers that make up the cellulose backbone. It is often used as its sodium salt, sodium carboxymethyl cellulose.
Usage examples of "carboxymethyl cellulose".
For instance, a clay mineral with the lovely name montmorillonite tends to break up in the presence of small amounts of an organic molecule with the less-lovely name carboxymethyl cellulose.
Smaller quantities of carboxymethyl cellulose, on the other hand, have just the opposite effect, helping to stick montmorillonite particles together.