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Meaning of orthotriaene | Babel Free

Noun CEFR C1

Definitions

a sponge spicule that has three short rays projecting at right angles from a longer one

CEFR level

C1

Advanced
This word is part of the CEFR C1 vocabulary — advanced level.

See also

orthotrophy orthotropia orthotropic orthotropics orthotropism orthotropy