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Meaning of fast blue optical transient | Babel Free

Noun CEFR C2

Definitions

a very short duration bright flash in the visible spectrum; thought to be caused by a type of supernova

CEFR level

C2

Mastery
This word is part of the CEFR C2 vocabulary — mastery level.

See also

fast bowler fast bowling fast break fast breeder fast buck fast busy signal