List of 12-letter words beginning with

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There are 25 twelve-letter words beginning with PROTOS

Proto-Sapiens  protoscience proto-science  Proto-Semitic  protosinusid  protosirenid  protosolvent  protosomites  protospacers  protospecies  protospheres  protostegids  protostelids  protosteliid  protostellar  protosteloid  protostomata  protostomian  protostomous  protostrings  protostylids  protosuchian  protosuchids  protosulfide  protosynapse

27 definitions found

• Proto-Sapiens — prop.n. Synonym of Proto-Human.
• protoscience — n. An unscientific or pseudoscientific field of study which later… — n. A field of study at the initial phase of the scientific method…
• proto-science — n. Alternative form of protoscience.
• Proto-Semitic — prop.n. The hypothetical protolanguage of Semitic languages.
• protosinusid — n. Any weevil of the genus Protosinus.
• protosirenid — n. (Zoology) Any extinct mammal in the family Protosirenidae.
• protosolvent — n. (Chemistry) Any protonated solvent (containing hydrogen atoms)…
• protosomites — n. Plural of protosomite.
• protospacers — n. Plural of protospacer.
• protospecies — n. A preexisting type of species from which other species evolved.
• protospheres — n. Plural of protosphere.
• protostegids — n. Plural of protostegid.
• protostelids — n. Plural of protostelid.
• protosteliid — n. Any slime mould of the order Protosteliida.
• protostellar — adj. (Astronomy) Of or pertaining to a protostar.
• protosteloid — adj. Relating to the protostelids.
• protostomata — n. Plural of protostoma.
• protostomian — adj. Of or pertaining to the protostomes. — n. A protostome.
• protostomous — adj. Of or pertaining to a protostome.
• protostrings — n. Plural of protostring.
• protostylids — n. Plural of protostylid.
• protosuchian — n. Any crocodyliform of the clade Protosuchia.
• protosuchids — n. Plural of protosuchid.
• protosulfide — n. (Inorganic chemistry) Any of a series of sulfides of a particular…
• protosynapse — n. An evolutionary precursor of the synapse.

See this list for:

• Scrabble in English: no word
• French Wiktionary: 2 words
• Spanish Wiktionary: 1 word
• Italian Wiktionary: no word
• German Wiktionary: 4 words
• Portuguese Wiktionary: no word
• Dutch Wiktionary: no word

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