An Etymological Dictionary of Astronomy and Astrophysics

Without variations; identical, always the same in quality, degree, character, or manner.

Etymology (EN): → uni- + → form.

Etymology (PE): Yekdis, from yek, → uni-, + dis,
→ form; yeknavâxt, literally “with one rhythm,”
from yek, → one, + navâxt “rhythm,” from navâxtan, navâzidan “to play an instrument; to gratify,” navâ “music, song, melody” (Mid.Pers. nw’c “to treat kindly, honour,” niwag “music, melody;” Proto-Iranian *ni-uac-, from ni- “down; into,” → ni- (PIE),

• *uac- “to speak, treat kindly”).