/ Dictionary / Index C catastrophe theory: Meaning and Definition of Find definitions for: catas'trophe the"ory Pronunciation: [key] — Math. Math. a theory, based on topology, for studying discontinuous processes and the mathematical models that describe them. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. catastrophe catastrophism Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language