Meaning of counterillumination | Babel Free
Definitions
A behaviour, found in some cephalopods etc., in which bioluminescence is used to provide camouflage when viewed from below.
uncountable
CEFR level
C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
This word is part of the CEFR C2 vocabulary — mastery level.