mediety
The middle part; half; moiety.
obsolete
[creatures] made up of man and bird: the human mediety variously placed not only above, but below
Any function that splits an interval into equal-length subintervals.
Where it comes from
From the late Middle English medietee (“a half”), borrowed from the Classical Latin medietās. Doublet of moiety.
Adapted from the Wiktionary entry mediety (CC BY-SA 4.0).