List of 9-letter words beginning with

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There are 16 nine-letter words beginning with PROTO

PROTOAVIS	• PROTOAVIS n. a member of the genus Protoavis of the Triassic periods, with dinosaur-like tail and hind legs, but some anatomical features characteristic of modern birds.
PROTOCOLS	• protocols n. Plural of protocol. • PROTOCOL v. to draw up a protocol.
PROTODERM	• protoderm n. (Botany) the primary meristem from which the epidermis develops. • PROTODERM n. the dermatogen, the nascent epidermis, or external cuticle of plants in a forming condition.
PROTOGINE	• protogine n. (Geology) A form of granite containing silvery flakes of talc or similar minerals. • PROTOGINE n. a kind of granite or gneiss containing a silvery talcose mineral.
PROTOGYNY	• protogyny n. (Biology) The condition in which an organism begins life as a female and then changes into a male. • protogyny n. (Botany) The condition of flowers whose female parts mature before the male ones. • PROTOGYNY n. the development of female organs before male to avoid self-fertilization.
PROTONATE	• protonate v. (Chemistry, transitive) To add one or more protons to (a molecule, ion or radical). • protonate v. (Chemistry, intransitive) To acquire an additional proton. • PROTONATE v. to acquire an additional proton.
PROTONEMA	• protonema n. (Botany) A filament of cells that forms following the germination of the spores of mosses and liverworts. • PROTONEMA n. a branched filament produced by germination of a moss spore, giving rise to moss plants from buds.
PROTOPODS	• protopods n. Plural of protopod. • PROTOPOD n. a part of a crustacean appendage.
PROTOSTAR	• protostar n. (Astronomy) A collection of gas and dust in space with high temperature that usually grows to the point… • PROTOSTAR n. a condensing mass of gas in the early formation of a star.
PROTOTYPE	• prototype n. An original form or object which is a basis for other forms or objects (particularly manufactured items)… • prototype n. An early sample or model built to test a concept or process. • prototype n. (Computing) A declaration of a function that specifies the name, return type, and parameters, but none…
PROTOXIDE	• protoxide n. (Inorganic chemistry) Any of a series of oxides of a particular metal that has the fewest atoms of oxygen… • PROTOXIDE n. that one of a series of oxides having the lowest proportion of oxygen, also PROTOXID.
PROTOXIDS	• protoxids n. Plural of protoxid. • PROTOXID n. that one of a series of oxides having the lowest proportion of oxygen, also PROTOXIDE.
PROTOZOAL	• protozoal adj. Protozoan. • PROTOZOAL adj. of or pertaining to the Protozoa.
PROTOZOAN	• protozoan n. (Cytology) Any of the diverse group of eukaryotes, of the phylum Protozoa, that are primarily unicellular… • protozoan adj. Of, pertaining to, or characteristic of a protozoan. • PROTOZOAN n. any member of the Protozoa, also PROTOZOON.
PROTOZOIC	• protozoic adj. Of or relating to the protozoa. • PROTOZOIC adj. of or pertaining to the protozoa.
PROTOZOON	• protozoon n. (Cytology) A protozoan. • PROTOZOON n. any member of the Protozoa, also PROTOZOAN.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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English Wiktionary: 58 words
Scrabble in French: 11 words
Scrabble in Spanish: 8 words
Scrabble in Italian: 15 words
Scrabble in German: 5 words
Scrabble in Romanian: 29 words

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