Definition of Carrier

Noun: carrier ker-ee-ur [N. Amer], ka-ree-u(r) [Brit]

Someone whose employment involves carrying something
"the bonds were transmitted by carrier";
- bearer, toter
A self-propelled wheeled vehicle designed specifically to carry something
"refrigerated carriers have revolutionized the grocery business"
A large warship that carries planes and has a long flat deck for takeoffs and landings
- aircraft carrier, flattop [US], attack aircraft carrier
An inactive substance that is a vehicle for a radioactive tracer of the same substance and that assists in its recovery after some chemical reaction
A person or firm in the business of transporting people or goods or messages
- common carrier
A radio wave that can be modulated in order to transmit a signal
- carrier wave
A man who delivers the mail
- mailman [N. Amer], postman, mail carrier [N. Amer], letter carrier [N. Amer], postie [Brit]
A boy who delivers newspapers
- newsboy
A rack attached to a vehicle; for carrying luggage, skis or the like
(medicine) a person (or animal) who has some pathogen to which he is immune but who can pass it on to others
- immune carrier
(genetics) an organism that possesses a recessive gene whose effect is masked by a dominant allele; the associated trait is not apparent but can be passed on to offspring