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Meaning of X-plane | Babel Free

Noun CEFR B1

Definitions

Any of a series of experimental aircraft and rockets, used to test and evaluate new technologies and aerodynamic concepts.

US

CEFR level

B1

Intermediate
This word is part of the CEFR B1 vocabulary — intermediate level.

See also

X-Position X-radiation X-ray X-ray absorbing glass X-ray astronomy X-ray binary