Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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cube root a number of which a given number is the product when multiplied by itself three times.
pink root a fungus disease affecting onions and similar plants that causes the roots to shrink and turn pink.
rattlesnake root any of various plants whose bitter roots or tubers have been thought to cure snakebite.
root around to rummage about, searching for something. [2 definitions]
root beer a carbonated soft drink made or flavored with extracts derived from the roots, barks, and leaves of certain plants.
root borer an insect or its larva that bores into plant roots.
root canal the pulp-filled tubular channel in the root of a tooth. [2 definitions]
root cellar an underground storage room for root crops and other vegetables.
root crop a crop, such as potatoes, beets, or carrots, that is grown for its edible roots.
root hair a thin, hairlike, permeable outgrowth from a root that absorbs water and minerals from the soil.
root mean square the square root of the arithmetic mean of the squares in a given set of numbers.
square root a divisor of a number which, when multiplied by itself, equals that number.
take root to send out new roots; begin to grow or become fixed in the ground. [2 definitions]