penetrate

verb
pen·​e·​trate | \ ˈpe-nə-ˌtrāt How to pronounce penetrate (audio) \
penetrated; penetrating

Definition of penetrate

transitive verb

1a : to pass into or through this route … penetrates the leading resort and lake areasAmerican Guide Series: Minnesota Only a dirt road penetrates the rough, wooded terrain.
b : to enter by overcoming resistance : pierce This bullet can penetrate armor.
c : to gain entrance to an apartment that I now penetrated for the first time— Osbert Lancaster
2a : to see into or through their keen eyes can penetrate the water to a depth of … forty feet— L. K. Porritt
b : to discover the inner contents or meaning of a scientific secret which will eventually be penetrated by other countries— Vera M. Dean
3 : to affect profoundly with feeling men may still be penetrated with awe by the divine righteousness— R. W. Dale
4 : to diffuse through or into the cold began to penetrate his bones— E. K. Gann

intransitive verb

1a : to pass, extend, pierce, or diffuse into or through something fishes … which enter tidal rivers and penetrate almost to fresh water— J. L. B. Smith
b : to pierce something with the eye or mind strained his eyes to penetrate beyond the thick cloud of dust insight that penetrates to the very heart of some … problem— W. F. Hambly
2 : to affect deeply the senses or feelings the suggestion might penetrate deeply enough … to make her a good deal more wary— H. A. Overstreet

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Synonyms & Antonyms for penetrate

Synonyms

access, enter, pierce

Antonyms

depart, exit, leave

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Choose the Right Synonym for penetrate

enter, penetrate, pierce, probe mean to make way into something. enter is the most general of these and may imply either going in or forcing a way in. entered the city in triumph penetrate carries a strong implication of an impelling force or compelling power that achieves entrance. the enemy penetrated the fortress pierce means an entering or cutting through with a sharp pointed instrument. pierced the boil with a lancet probe implies penetration to investigate or explore something hidden from sight or knowledge. probed the depths of the sea

Examples of penetrate in a Sentence

These bullets can penetrate armor. radiation penetrating the Earth's atmosphere The bullet failed to penetrate. The heat penetrated through the wall. The roots of these plants have been known to penetrate to a depth of more than 15 feet. My car's headlights couldn't penetrate the dense fog.
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Recent Examples on the Web

After a numbing cream and eye shields are applied, a stamping pen with multiple thin needles penetrates the skin from one to two millimeters. Emily Listfield, Harper's BAZAAR, "Non-Surgical Eye-Lifts Are On the Rise," 14 Aug. 2019 Remo’s president, Omer Barnes, said a bullet may penetrate the door, but a shooter could not get in. sun-sentinel.com, "Brooklyn Jewish school installs bullet-resistant classroom doors," 13 Aug. 2019 The porcelain of the toilet actually penetrated the wall. Morgan Hines, USA TODAY, "Lightning hit a septic tank. A toilet exploded. 'A first in plumbing history'," 6 Aug. 2019 As a young business executive, this Ms. B is less inclined to give orders than to ask penetrating, direct questions. Mark Kiszla, The Denver Post, "Kiszla: Why Brittany Bowlen is the heir apparent to fill void at Broncos headquarters left by the late, great Mr. B," 4 Aug. 2019 Light pollution penetrates under the water, creating a vastly different world for fish living in shallow reefs near urban environments. Jenny Howard, National Geographic, "Marine pollution, explained," 2 Aug. 2019 The fight for Saudi women's rights has even penetrated the entertainment industry -- in July, rapper Nicki Minaj backed out of a concert in Saudi Arabia after pressure from fans and human rights organizations. Jessie Yeung And Hamdi Alkhshali, CNN, "Saudi Arabian women finally allowed to hold passports and travel independently," 2 Aug. 2019 In the rest of America large, centralised donut bakers such as Dunkin’ Donuts and Krispy Kreme hold sway, but neither has successfully penetrated the Los Angeles market. The Economist, "How donuts fuelled the American Dream," 26 July 2019 Chitosan penetrates both the skin and the hydrogel, linking them, whereas other bonding agents fuse them together with even more sticking power. Eva Frederick, Science | AAAS, "This embryo-inspired bandage is 17 times stickier than a Band-Aid," 24 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'penetrate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of penetrate

circa 1530, in the meaning defined at transitive sense 1a

History and Etymology for penetrate

Latin penetratus, past participle of penetrare, from penitus deep within, far; akin to Latin penus provisions

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More Definitions for penetrate

penetrate

verb

English Language Learners Definition of penetrate

: to go through or into something
: to see or show the way through (something)
: to succeed in becoming part of (an organization, a community, etc.)

penetrate

verb
pen·​e·​trate | \ ˈpe-nə-ˌtrāt How to pronounce penetrate (audio) \
penetrated; penetrating

Kids Definition of penetrate

1 : to pass into or through A nail penetrated the tire. But his voice was not strong enough to penetrate the thick wall.— E. B. White, Stuart Little
2 : to see into or through My eyes couldn't penetrate the darkness.

penetrate

verb
pen·​e·​trate | \ ˈpen-ə-ˌtrāt How to pronounce penetrate (audio) \