Noun

(en noun)

a violation or breach, as of a law

* {{quote-news

, year=2011 , date=September 18 , author=Ben Dirs , title=Rugby World Cup 2011: England 41-10 Georgia , work=BBC Sport citation , page= , passage=Georgia, ranked 16th in the world, dominated the breakdown before half-time and forced England into a host of infringements , but fly-half Merab Kvirikashvili missed three penalties.}}

an encroachment on a right, a person, a territory, or a property

* {{quote-news

, year=2008 , date=February 27 , author=Kira Cochrane , title=How could it happen again? , work=The Guardian citation , page= , passage=As soon as it was suggested that it was considering the Swedish model – in which men are criminalised for buying sex, but the women working in prostitution are decriminalised – a slew of prominent male columnists started arguing against this infringement on a man's right to purchase a woman's body. }}

Noun

(en noun)

The forcible inclusion or entry of an external group or individual; the act of intruding.

* He viewed sales calls as an unwelcome intrusion .

*{{quote-magazine, date=2012-12-14

, author=Simon Jenkins, authorlink=Simon Jenkins , title=We mustn't overreact to North Korea boys' toys , volume=188, issue=2, page=23 , date=2012-12-21 , magazine= citation , passage=The threat of terrorism to the British lies in the overreaction to it of British governments. Each one in turn clicks up the ratchet of surveillance, intrusion and security. Each one diminishes liberty.}}

(geology) Magma forced into other rock formations; the rock formed when such magma solidifies.