(algebra) A root of a polynomial equation which has multiplicity greater than one.

(botany) A lump found on the roots of some plants, primarily legumes, that forms a symbiosis with nitrogen-fixing bacteria known as rhizobia, allowing the plant to obtain nitrogen directly from the atmosphere, which most plants cannot do.

Not moving or flinching due to surprise.

Synonym of celeriac.

(neuroanatomy) The one of the two roots of a spinal nerve that passes dorsally to the spinal cord and consists of sensory fibers

(archaic) Synonym of mangelwurzel

plural of root nodule

Synonym of Jack-in-the-pulpit (“the plant Arisaema triphyllum”)

Alternative form of rootin' tootin'.

The plant Jeffersonia diphylla.