/ Dictionary / Index O oblast: Meaning and Definition of Find definitions for: o•blast Pronunciation: (ob'last, -läst Russ. ô'bl&schwast), [key] — pl. o•blasts, o•bla•sti (in Russia and the Soviet Union) an administrative division corresponding to an autonomous province. region; province. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oblanceolate oblate Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language