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Meaning of protobird | Babel Free

Noun CEFR B2

Definitions

Any of several extinct animals proposed as an evolutionary link between fossil reptiles and fossil birds; a proavian.

informal

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

protoblattoid protoboard protobranch protobromide protobrosis protobulge