Of or relating to wheels. / (obsolete) Alternative form of rotary: of or relating to circular motion.

(Catholicism) Of or relating to the Rota.

(historical units of measure, obsolete) Alternative form of rottol: a former Middle Eastern and North African unit of dry weight variously equal to 1–5 lbs. (.5–2.5 kg.).

plural of rotan

Alternative form of rhotacism

plural of rotalite

(paleontology, archaic) Any fossil foraminifer of the family Rotaliidae, abundant in chalk formations.

(idiomatic) A bad person, especially one who has a corrupting influence on others: a bad apple.

(forestry) The time allowed to elapse between successive occurrences of a stand of trees being logged. / Used other than figuratively or idiomatically: see rotation, time.

(astronomy) The sidereal day of a planet. (I.e., in the definition for "sidereal day", replace "Earth" by the given planet.)