(uncountable) A motorcycle sport run on predominantly off-road courses, with many obstacles and challenges. / (countable) A particular race or event in the sport of enduro.

(calculus) A generalization of the fundamental theorem of calculus to the two-dimensional plane, which states that given two scalar fields P and Q and a simply connected region R, the area integral...

(intransitive) To participate in a system of car sharing.

(biology) Any of various fungi, of the genus Fusarium, some of which are pathogenic to plants and animals.