An Etymological Dictionary of Astronomy and Astrophysics

As great as; like or alike in quantity, degree, value.

Etymology (EN): From L. æqualis “uniform, identical, equal,” from æquus “level, even, just,” of unknown origin, + -alis, → -al.

Etymology (PE): Hamug, from Mid.Pers. hamôg “equal, like,” from ham “the same; together; also” (O.Pers./Av. ham-; cf. Skt. sam-; also O.Pers./Av. hama- “one and the same;” Skt. sama-; Gk. homos-; originally identical with PIE numeral *sam- “one,” from *som-)

• suffix -og/-ok/-uk, as in nêrog “force” (from nar “man, male”), nêvakôk “good, nice” (from nêvak “good, beautiful, nice, favorable”), mastôk “drunk” (from mast “drunk, drunken”), câpuk “quick; active,” sapuk “light, brisk.”