An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Because of a lack of opposition or alternative.

→ by; → default.

1) Failure to act; inaction or neglect; failure to meet financial obligations.
2) Lack; want; absence. See also → deficiency, → lack, → shortage.
3) Computers: A selection automatically used by a program when none is specified by the user. → by default.

M.E. defau(l)te, O.Fr. defaute "fault, defect, failure," from V.L. *defallita "a deficiency or failure," p.p. of *defallere, from L. → de- "away" + fallere "to deceive, to cheat; to put wrong, to lead astray."

Nâbun, literally "not-being, non-existence," from nâ- negation prefix, → non-, + (Kurd.) bun "to be," variants (Gazi, Yarani, Gurani, Semnâni) bu-, classical Pers. bov-, budan "to be, → exist."