Ellipsis of something is rotten in the state of Denmark.

Of a component: that can be repeatedly restored to a fully serviceable condition.

A rotable part.

plural of rotable

plural of rotaplane

An aircraft which creates lift by means of rotors

A rotary printing press

A club that is part of Rotary International.

In a rotameric manner

(astrophysics) for a galaxy, a plot of the orbital velocity of objects with respect to the center of the galaxy, as a function of the distance between the two