enharmonic

Meaning

Adjective

• Describing two or more identical or almost identical notes that are written differently when in different keys. (Whether they are identical depends on the tuning method used.)
• Of or pertaining to a tetrachord.

Origin

• From Latin enharmonicus, from Late Latin enarmonius, from Ancient Greek ἐναρμόνιος, from ἐν+ἁρμονία