1. (a.) First after the fifth; next in order after the fifth.

2. (a.) Constituting or being one of six equal parts into which anything is divided.

3. (n.) The quotient of a unit divided by six; one of six equal parts which form a whole.

4. (n.) The next in order after the fifth.

5. (n.) The interval embracing six diatonic degrees of the scale.

consecutive intervals decimalization decimation degree diapason diatessaron diatonic interval diatonic semitone enharmonic diesis enharmonic interval fifth fourth half step halftone hexad hexadic hexagonal hexahedral hexamerous hexangular hexapartite hexastyle hexatomic hexavalent interval less semitone melodic interval note octave parallel octaves quinquepartition quinquesection second semitone senary seventh sexennial sextipartite sextipartition sextuple sixfold step tenth third tithe tone unison interval whole step