List of 19-letter words beginning with

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There are 15 nineteen-letter words beginning with PROTO

protochlorophyllide — n. (Biochemistry) Any of several fluorescent pigments that are…
protoconversational — adj. Relating to a protoconversation.
protofibrillization — n. The formation of protofibrils.
Protoliterate␣period — prop.n. (Historical) The Uruk period.
Proto-Malayo-Sumbawan — prop.n. A proposed common ancestor to the group of Malayo-Sumbawan languages.
protomyofibroblasts — n. Plural of protomyofibroblast.
proton-pump␣inhibitor — n. Alternative form of proton pump inhibitor.
proton␣pump␣inhibitor — n. (Pharmacology) Any chemical that totally or partly decreases…
protophorphyrinogen — n. Misspelling of protoporphyrinogen.
protoplanetary␣discs — n. Plural of protoplanetary disc.
protopolygonatoside — n. A particular steroid glycoside.
protoporphyrinogens — n. Plural of protoporphyrinogen.
proto-science␣fiction — n. (Science fiction) Any of various early literature that contained…
Proto-Trans-New␣Guinea — prop.n. The reconstructed proto-language ancestral to the Trans-New…
prototype␣extensions — n. Plural of prototype extension.

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