/ Dictionary / Index P preschooler: Meaning and Definition of Find definitions for: pre•school•er Pronunciation: (prē'sk'lur), [key] — n. a child below the official school starting age, usually a child up to age five. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: preschooler (Thesaurus) preschool prescience Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language