/ Dictionary / Index P protistology: Meaning and Definition of Find definitions for: pro•tis•tol•o•gy Pronunciation: (prō"ti-stol'u-jē), [key] — n. the biology of the Protista. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Protista protium Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language