(algebra, ring theory) Given a commutative ring R, any ideal I such that for any a,b ∈ R, if ab ∈ I then either b ∈ I or aⁿ ∈ I for some integer n > 0.

(mining, historical) A person employed to remove timber props.

Having been given freely rather than purchased.

(graphical user interface) Initialism of Magic User Interface. / (graphical user interface) Initialism of Multilingual User Interface.