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root1 US English

The part of a plant that attaches it to the ground or to a support, typically underground, conveying water and nourishment to the rest of the plant via numerous branches and fibers

root2 US English

(Of an animal) turn up the ground with its snout in search of food

rud US English

The spawn of a frog or toad (also toad rud).

root US Thesaurus

a plant's roots

at root US English

Basically; fundamentally

ague root US English

Any of several plants whose roots or rhizomes are used medicinally; specifically = ague-grass.

air root US English

An aerial root, especially one emerging from the stem of a climbing plant or epiphyte which typically serves as a point of attachment to a support rather than as an organ of nutrient absorption.

cube root US English

The number that produces a given number when cubed

ear root US English

The base of the external ear; the earlobe.

life root US English

(More fully life root plant) golden ragwort, Packera aurea, used medicinally for a wide variety of complaints.

man-root US English

Either of two North American ipomoeas with large tuberous roots, Ipomoea leptophylla, of the dry plains east of the Rocky Mountains, and the wild potato vine, I. pandurata.

musk root US English

Any of several plants with musk-scented roots, or the roots themselves: (a) the root of the sumbul, Ferula sumbul, used in medicine.

own-root US English

(Of a rose, fruit tree, etc.) growing from its own root, rather than grafted or budded.

pig-root US English

(Of a horse or other animal) kick upwards with the hind legs, keeping the head down and the forelegs firmly planted

poke root US English

The root of Indian poke (Veratrum viride), or of pokeweed (Phytolacca americana); either of these plants.

prop root US English

(In certain plants, especially trees such as mangroves) an adventitious root that grows out from the lower part of the stem or lower branches, serving to give it additional support.

take root US English

(Of a plant) begin to grow and draw nourishment from the soil through its roots

root for US English

Support or hope for the success of (a person or group entering a contest or undertaking a challenge)

root beer US English

An effervescent drink made from an extract of the roots and bark of certain plants

root cap US English

A layer of parenchymatous cells covering the root meristem which serve to protect it from damage as it is pushed through the soil.

root crop US English

A crop that is a root vegetable or other root, e.g., sugar beet

root end US English

The end of a plant stem, seed, etc., which is next to the root, or from which the root develops.

root-fill US English

To replace the contents of the root canals of (a tooth) with a filling material.

root fly US English

A dark slender fly whose larvae may cause serious damage to the roots of crops

root form US English

Linguistics. A word form consisting of an unmodified root, especially an uninflected verb form.

root gall US English

Any of various galls occurring on the roots of plants, caused by nematodes, insects, fungi, or bacteria.

root hair US English

Each of a large number of elongated microscopic outgrowths from the outer layer of cells in a root, absorbing moisture and nutrients from the soil

root-knot US English

A disease of cultivated flowers and vegetables caused by eelworm infestation, resulting in galls on the roots

root-leaf US English

A leaf arising from the base of a stem; a radical leaf.

root room US English

A room used for storing edible roots and tubers.

root rot US English

Any of various fungal diseases of plants in which the roots decay.

root run US English

The space over which the roots of a plant extend

root sign US English

Another term for radical sign.

root stem US English

Botany. Any stem-like root or rootlike stem, as an aerial root, caudex, rhizome, etc.

root weed US English

A weed which propagates itself chiefly by means of roots, as distinguished from one which originates from seed.

root work US English

Horticulture. The mature roots of trees and plants used to create ornamental features in a garden. Compare rockwork, 2b. Now historical.

aerial root US English

A plant root that grows in the air; especially a root of a climber that clings to its support, or a root of a mangrove that grows upwards to allow respiration.

black root US English

Any of various North American medicinal plants with dark-coloured roots; especially a kind of speedwell, Veronicastrum virginicum, native to moist ground in the eastern United States.

cancer root US English

Any of various plants used medicinally; especially any of several parasitic plants of the genera Orobanche and Conopholis (family Orobanchaceae), formerly used to treat skin complaints such as ulcers, and believed by some to be effective against cancer.

celery root US English

Another term for celeriac.

heart-root US English

The source of a person's most profound emotions; the bottom of the heart. Also in plural in same sense. Compare heart, root. Now poetic and rare.

Indian root US English

The American spikenard, Aralia racemosa.

latent root US English

A quantity which, when subtracted from each entry in the diagonal of a square matrix, makes the determinant of the resulting matrix equal to zero.

mallee root US English

The root of a mallee, used as a form of fuel.

memory root US English

The Indian turnip, Arisaema triphyllum, an aroid plant with an acrid corm which causes a burning sensation when chewed; the corm itself.

mother root US English

A primary or main root, from which lateral roots grow.

motor root US English

The ventral root of a spinal nerve, containing axons of motor neurons.

mouth-root US English

A small North American plant of shady swamps, Coptis trifolia (family Ranunculaceae), which has an astringent root reputed to cure sore mouths; also called goldthread.

nerve root US English

Anatomy. A bundle of nerve fibres as it emerges from the neuraxis; especially either of the paired (dorsal and ventral) bundles of nerve fibres that emerge from the spinal cord and unite to form a spinal nerve.

orange-root US English

A North American plant, goldenseal, Hydrastis canadensis, whose root yields an orange-yellow dye.

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