Countable Nouns Starting with PROTO and Containing RA

This list gathers 5 English countable nouns starting with PROTO and containing RA, such as Protoceratops, Prototypographer, Protocoleopteran, Protohymenopteran and Protoforaminifer. Use the sorting controls below to organize entries by length, or consult our noun grammar guide to review singular and plural count rules.

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Starts with PROTOC
2 words
protoceratops
protocoleopteran
Starts with PROTOF
1 words
protoforaminifer
Starts with PROTOH
1 words
protohymenopteran
Starts with PROTOT
1 words
prototypographer

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