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

To apply or put forth, as strength.

From L. ex(s)ertus, p.p. of exserere "to thrust out, put forth," from → ex- "out," + serere "to bind together."

Balizidan, from Kurd (Kurm.) bil "work," bilîn "to work," variant of varz, → practice, + infinitive suffix -idan.

1) Vigorous action; physical or mental effort.
2) The application or exercise of force, power, or faculties.

→ exert; → -tion.