root Meaning in Cambridge American English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of "root" - American English Dictionary

See all translations

rootnoun

 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

rootverb [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)
What is the pronunciation of root?
Add Cambridge dictionaries to your browser to your website

Definitions of “root” in other dictionaries

Word of the Day
field event

a sports event in which athletes take part one after the other rather than racing or competing together

Word of the Day

Are you a glass-half-full person? (Everyday Idioms)
Are you a glass-half-full person? (Everyday Idioms)
by Kate Woodford,
July 29, 2015
A reader of this blog recently asked for a post on idioms that are used in everyday English. This seemed like a reasonable request. After all, if you are going to make the effort to learn a set of English idioms, you want those idioms to be useful. The question, then, was

Read More 

exoskeleton noun
exoskeleton noun
July 27, 2015
a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.

Read More