A root growing from the above-ground stem or trunk, and providing support.

The root of the herb Veronicastrum virginicum, used as a cathartic and emetic.

plural of root pressure

(mathematics) A complex number which, when raised to the power of n, yields the radicand of its nth degree radical, and which has the greatest real part among all such numbers, and positive imaginary part in case of equality of the real parts.

plural of root bark

Alternative form of rootbound

plural of root canal

plural of root vegetable

The root of a plant used as an edible vegetable, such as the carrot, potato, or onion.

Alternative spelling of arrowroot