contact (n.)

1620s, "action, state, or condition of touching," from Latin contactus "a touching" (especially "a touching of something unclean, contamination"), from past participle of contingere "to touch, seize," from assimilated form of com "with, together" (see con-) + tangere "to touch," from PIE root *tag- "to touch, handle."

The figurative sense of "a connection, communication" is attested from 1818. The meaning "a person who can be called upon for assistance" is attested by 1931. As a call to the person about to spin an aircraft propeller to signal that the ignition is switched on, contact was in use by 1913.

To make contact (1860) originally was in reference to electrical circuits. Contact lens " thin artificial lens placed directly on the surface of the eye to correct visual defects" is first recorded 1888, in a translation of an article published in Zurich in 1887 by A. Eugen Fick; contacts for "contact lenses" is from 1957. Contact sport, for one involving bodily contact, is attested from 1922.

contact (v.)

1834, "to bring together or put in contact," from contact (n.). Meaning "get in touch with" is 1927, American English. Related: Contacted; contacting.

Definitions of contact
contact (n.)
close interaction;
they claimed that they had been in contact with extraterrestrial beings
they kept in daily contact
contact (n.)
the act of touching physically;
her fingers came in contact with the light switch
Synonyms: physical contact
contact (n.)
the state or condition of touching or of being in immediate proximity;
litmus paper turns red on contact with an acid
contact (n.)
the physical coming together of two or more things;
contact with the pier scraped paint from the hull
Synonyms: impinging / striking
contact (n.)
a person who is in a position to give you special assistance;
he used his business contacts to get an introduction to the governor
Synonyms: middleman
contact (n.)
a channel for communication between groups;
Synonyms: liaison / link / inter-group communication
contact (n.)
(electronics) a junction where things (as two electrical conductors) touch or are in physical contact;
they forget to solder the contacts
Synonyms: tangency
contact (n.)
a communicative interaction;
the pilot made contact with the base
Synonyms: touch
contact (n.)
a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication;
Synonyms: contact lens
contact (v.)
be in or establish communication with;
He never contacted his children after he emigrated to Australia
Synonyms: reach / get through / get hold of
contact (v.)
be in direct physical contact with; make contact;
The wire must not contact the metal cover
The surfaces contact at this point
Synonyms: touch / adjoin / meet