root - definition in the American English Dictionary - Cambridge Dictionaries Online

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English definition of “root”

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root

noun  us   /rut, rʊt/

root noun (PLANT PART)

[C] biology the part of a plant which grows down into the earth [C] biology The root of a hair, tooth, or nail is the part of it that is inside the body.

root noun (ORIGIN)

[C] the origin or source of something: We must get to the root of this problem.

root noun (WORD)

[C] the basic form of a word, to which prefixes or endings can be added: The root of the word "sitting" is "sit."

root noun (number)

algebra a number that is the solution of an equation (= mathematical statement)
rooted
adjective [not gradable]  us   /ˈrut̬·əd, ˈrʊt̬-/
deeply rooted loyalty

root

verb [I/T]  us   /rut, rʊt/

root verb [I/T] (PLANT PART)

(of a plant) to develop roots and begin to grow
(Definition of root from the Cambridge Academic Content Dictionary © Cambridge University Press)
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