/ Dictionary / Index P polyclonal: Meaning and Definition of Find definitions for: pol•y•clo•nal Pronunciation: (pol"ē-klōn'l), [key] — adj. pertaining to cells or cell products derived from several lines of clones. —n. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Polyclitus polyclonal antibody Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language