/ Dictionary / Index P penetrating: Meaning and Definition of Find definitions for: pen•e•trat•ing Pronunciation: (pen'i-trā"ting), [key] — adj. able or tending to penetrate; piercing; sharp: a penetrating shriek; a penetrating glance. acute; discerning: a penetrating observation. noting a wound that pierces the skin, esp. a deep wound entering an organ or body cavity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: penetrating (Thesaurus) penetrate penetration Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language