/ Dictionary / Index P precisian: Meaning and Definition of Find definitions for: pre•ci•sian Pronunciation: (pri-sizh'un), [key] — n. a person who adheres punctiliously to the observance of rules or forms, esp. in matters of religion. one of the English Puritans of the 16th and 17th centuries. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. precise precision Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language