a domestic or tamed animal kept for companionship or pleasure

the pony was a family pet

they don't let us keep pets

a pet cat

used as an affectionate form of address

don't cry, pet, it's all right

denoting something that one devotes special attention to or feels particularly strongly about

another of her pet projects was the arts centre

my pet hate is bad manners

stroke or pat (an animal) affectionately

the cats came to be petted

a fit of sulking or ill humour

Mother's in a pet

a synthetic resin made by copolymerizing ethylene glycol and terephthalic acid, widely used to make polyester fibres

polyethylene terephthalate

positron emission tomography, a form of tomography used especially for brain scans