Dictionary
phras'al verb'
Gram.
a combination of verb and one or more adverbial or prepositional particles, as
catch on, take off, bring up, or
put up with, functioning as a single semantic unit and often having an idiomatic meaning that could not be predicted from the meanings of the individual parts.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.