/ Dictionary / Index G growth cone: Meaning and Definition of Find definitions for: growth' cone" Pronunciation: [key] — Cell Biol. Cell Biol. a flattened area at the end of a growing axon or dendrite, having radiating filopodia and lemellopodia that function as guides for the outgrowth of embryonic nerve fibers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. growth growth factor Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language