Longman Dictionary of Contemporary English homepage

Date: 1500-1600
Language: Latin
Origin: , past participle of penetrare

penetrate

verb
     
Related topics: Human, Organizations
pen‧e‧trate
1

go through

[intransitive and transitive] to enter something and pass or spread through it, especially when this is difficult [↪ pierce]:
bullets that penetrate thick armour plating
Sunlight barely penetrated the dirty windows.
penetrate into
Explorers penetrated deep into unknown regions.
2

business

[transitive]BBT to start to sell things to an area or country, or to have an influence there:
Few U.S. companies have successfully penetrated the Japanese electronics market.
3

organization

[transitive]SSOPPG to succeed in becoming accepted into a group or an organization, sometimes in order to find out their secrets:
KGB agents had penetrated most of their intelligence services.
4

understand

formal
a) [transitive] to succeed in understanding something:
Science has penetrated the mysteries of nature.
b) [intransitive and transitive] to be understood, with difficulty:
What could I say that would penetrate his thick skull?
5

sex

[transitive]HBH if a man penetrates someone, he puts his penis into a woman's vagina or into someone's anus when having sex
6

see through

[transitive] to see into or through something when this is difficult:
My eyes couldn't penetrate the gloom.

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