An Etymological Dictionary of Astronomy and Astrophysics

Divergence or disagreement, as between facts, claims, or calculations.

Etymology (EN): From L. discrepantia, from discrepantem, pr.p. of discrepare “sound differently, differ,” from → dis- “apart, off” + crepare “to rattle, crack.”

Etymology (PE): Nâhamxâni, from nâ- “non, un-,” → a-, + hamxâni “siniging together,” from ham- “together,” → com-,

• xâni, from xân stem of xândan “to sing; to read; to call,” Mid.Pers. xwân- “to resound; to call,” Av. x^van- “to sound,”
  Proto-Iranian *huan- “to call;” cf. Skt. svan-, sváranti “to sound, make a sound, sing;” L. sonus “sound,” sonare “to sound;” O.E. swinn “music, song,” PIE base *suen- “to sound” (Cheung 2007).