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partite
partition
partition coefficient
partitive
partizan
partly
partner
partnership
parton
partook
partridge
partridgeberry
parturient
parturifacient
parturition
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parton
par·ton [ pr tòn ] (plural par·tons)


noun 
Definition:
 
postulated elementary particle: a postulated elementary particle, proposed as a constituent of neutrons and protons
[Mid-20th century. <particle]
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