/ Dictionary / Index P pyknic: Meaning and Definition of Find definitions for: pyk•nic Pronunciation: (pik'nik), [key] — Psychol. Psychol. —adj. (of a physical type) having a fat, rounded build or body structure. Cf.(def. 2),(def. 5). —n. a person of the pyknic type. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pyknic (Thesaurus) pyjamas Pylades Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language