- an individual or company, as a railroad or steamship line, engaged in transporting passengers or goods for profit.
- common carrier.
- an individual possessing an unexpressed, recessive trait.
- the bearer of a defective gene.
Origin of carrier
- the inert solid on which a dyestuff is adsorbed in forming a lake
- a substance, such as kieselguhr or asbestos, used to support a catalyst
- an inactive substance containing a radioisotope used in radioactive tracing
- an inert gas used to transport the sample through a gas-chromatography column
- a catalyst that effects the transfer of an atom or group from one molecule to another
late 14c., agent noun from carry (v.). Meaning "person or animal that carries and disseminates infection without suffering obvious disease" is from 1899; genetic sense is 1933. As a short form of aircraft carrier it dates from 1917. Carrier pigeon is from 1640s.