Wiktionary
urea-formaldehyde resin
n. (context chemistry English) Any of several of the condensation products of the reaction between urea and formaldehyde (and their derivatives) used as a thermosetting material.
WordNet
urea-formaldehyde resin
n. a clear thermosetting resin made from urea and formaldehyde and used in electrical fittings, adhesives, and finishes