/ Dictionary / Index P poikiloblastic: Meaning and Definition of Find definitions for: poi•kil•o•blas•tic Pronunciation: (poi-kil"u-blas'tik, poi"ku-lu-), [key] — adj. Petrog. (of metamorphic rocks) having small grains of one mineral embedded in metacrysts of another mineral. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. poikilitic poikilothermal Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language