Definitions from Wiktionary ( )

▸ noun:  An animal kept as a companion.
▸ noun:  (by extension) Something kept as a companion, including inanimate objects. (pet rock, pet plant, etc.)
▸ noun:  One who is excessively loyal to a superior and receives preferential treatment.
▸ noun:  Any person or animal especially cherished and indulged; a darling.
▸ verb:  (transitive) To stroke or fondle (an animal).
▸ verb:  (transitive, intransitive, informal) To stroke or fondle (another person) amorously.
▸ verb:  (dated, transitive) To treat as a pet; to fondle; to indulge.
▸ verb:  (archaic, intransitive) To be a pet.
▸ verb:  (archaic, intransitive) To be peevish; to sulk.
▸ adjective:  Favourite; cherished; the focus of one's (usually positive) attention.
▸ adjective:  Kept or treated as a pet.
▸ adjective:  (obsolete) Good; ideal.
▸ noun:  A fit of petulance, a sulk, arising from the impression that one has been offended or slighted.
▸ noun:  (Ireland, Geordie) A term of endearment usually applied to women and children.
▸ noun:  Abbreviation of petition. [A formal, written request made to an official person or organized body, often containing many signatures.]
▸ noun:  (uncountable, organic chemistry) Initialism of polyethylene terephthalate. [(organic chemistry) A thermoplastic resin of the polyester family used particularly in the manufacture of plastic bottles (PET) and fabrics (Terylene).]
▸ noun:  (countable, medicine) Acronym of positron emission tomography. [(medicine) A medical imaging technique which detects the gamma rays produced by positrons emitted from injected radionuclides.]
▸ noun:  (countable, genetics) Acronym of paired-end tag. [(genetics) Any of the short sequences, at the 5’ and 3’ ends of a DNA fragment, that are sufficiently unique (theoretically) so as to exist together only once in a genome, therefore making the sequence of the DNA in between them available upon search.]
▸ noun:  (countable, historical, computing, backronym) Acronym of personal electronic transactor, a line of personal computers produced by Commodore International.
▸ noun:  (Canadian politics) Initialism of Pierre Elliott Trudeau.

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