Proto-

Definition of Proto-

Pro´to-
1.A combining form prefix signifying first, primary, primordial; as, protomartyr, the first martyr; protomorphic, primitive in form; protoplast, a primordial organism; prototype, protozoan.
2.(Chem.) Denoting the first or lowest of a series, or the one having the smallest amount of the element to the name of which it is prefixed; as protoxide, protochloride, etc.
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Protestantly
Protestation
Protestator
Protester
Protestingly
Proteus
Prothalamion
Prothallium
Prothallus
Prothesis
Prothetic
Prothonotary
Prothonotary warbler
Prothonotaryship
Prothoracic
Prothorax
Prothyalosome
Protist
Protista
Protiston
-Proto--
Proto-Doric
Protocanonical
Protocatechuic
Protocercal
Protococcus
Protocol
Protocolist
Protoconch
Protogine
Protogynous
Protohippus
Protomartyr
Protomerite
Protometals
Protomorphic
Protonema
Protonotary
Protoorganism
Protopapas
Protophyte
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