/ Dictionary / Index T topological invariant: Meaning and Definition of Find definitions for: topolog'ical invar'iant Pronunciation: [key] — Math. Math. a property of a topological space that is a property of every space related to the given space by a homeomorphism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. topological group topological space Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language