/ Dictionary / Index I intrastate: Meaning and Definition of Find definitions for: in•tra•state Pronunciation: (in"tru-stāt'), [key] — adj. existing or occurring within the boundaries of a state, esp. of the United States:Cf. interstate. intrastate commerce. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: intrastate (Thesaurus) intraspinal intratelluric Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language