An Etymological Dictionary of Astronomy and Astrophysics

1. Math: An operation of a group G on itself which associates with each ordered pair (x,y) of elements in the group the element xyx^-1.
   

2. Grammar: The → inflection of verbs.

Etymology (EN): Verbal noun form of → conjugate.

Etymology (PE): Hamyuqeš, from ham-, as above + yuqeš verbal noun of yuqidan “to yoke, join,” from yuq “yoke,” from PIE *yeug- “to join,” → conjugate.