contactee' noun

A person who claims to have received communications from extraterrestrial beings

con'tactless adjective

Denoting a payment system in which credits stored on a smart card (qv) are deducted without the card being passed through a card reader

conˈtactor noun

A device for repeatedly making and breaking an electric circuit

contactˈual adjective

Relating to contact

contact centre noun

A building where workers provide services to a company's customers by telephone, computer, etc

contact flight noun

Navigation of an aircraft by ground observation alone

contact lens noun

A lens, usu of thin plastic material, worn in direct contact with the eyeball, instead of spectacles, to correct defects of vision

contact man noun (informal)

An intermediary in transactions, esp shady ones

contact metamorphism noun (geology)

Alteration of rocks in the neighbourhood of igneous materials

contact poison noun

A poison which can penetrate the skin, and which can act without being swallowed or inhaled

contact print noun (photography)

A print made by putting a negative or positive transparency in direct contact with a sensitized paper or film and exposing to light

conˈtact-print transitive verb

contact process noun

The process of large-scale manufacture of sulphuric acid by the oxidation of sulphur dioxide to sulphur trioxide in the presence of a catalyst

contact sport noun

A sport involving much physical contact between players

contact tracing noun

A system used by health workers and certain clinics, to control the spread of a disease, eg sexually transmitted disease, by finding as many individuals who have had contact with a patient as possible