ENHARMONICAL
Adjective
enharmonical (not comparable)
Alternative form of enharmonic
Source: Wiktionary
En`har*mon"ic, En`har*mon"ic*al, a. Etym: [Gr. enharmonique.]
1. (Anc. Mus.)
Definition: Of or pertaining to that one of the three kinds of musical
scale (diatonic, chromatic, enharmonic) recognized by the ancient
Greeks, which consisted of quarter tones and major thirds, and was
regarded as the most accurate.
2. (Mus.)
(a) Pertaining to a change of notes to the eye, while, as the same
keys are used, the instrument can mark no difference to the ear, as
the substitution of A for G#.
(b) Pertaining to a scale of perfect intonation which recognizes all
the notes and intervals that result from the exact tuning of diatonic
scales and their transposition into other keys.
Source: Webster’s Unabridged Dictionary 1913 Edition