root — English Dictionary

root
Pronunciations (7)
  • /ɹuːt/
    Pronunciation notes
    • Received-Pronunciation
  • /ɹʉwt/
    Pronunciation notes
    • British
    • Southern
    • Standard
  • /ɹut/
    Pronunciation notes
    • General-American
  • /ɹʉːt/
    Pronunciation notes
    • Australia
    • New-Zealand
  • /ɹʊt/
    Pronunciation notes
    • Midwestern-US
  • /ɾʉt/
    Pronunciation notes
    • Scotland
  • /ɻʉt/
    Pronunciation notes
    • Northern-Ireland

Noun

  1. The part of a plant, generally underground, that anchors and supports the plant body, absorbs and stores water and nutrients, and in some plants is able to perform vegetative reproduction.

    Usage
    • Countable
    • Uncountable
    Synonyms
    Narrower terms
    Examples

    This tree's roots can go as deep as twenty metres underground.

    A Greek historian Phylarchus describes a white root indigenous to India that caused eunuchism when a person bathed in water in which the root was steeped.

    More examples (1)

    A root caught Ulot's left foot and he almost fell.

  2. A root vegetable.

    Usage
    • Countable
    • Uncountable
    Examples

    [...] two fields which should have been sown with roots in the early summer were not sown because the ploughing had not been completed early enough.

  3. The part of a tooth extending into the bone holding the tooth in place.

    Usage
    • Countable
    • Uncountable
    Synonyms
    Examples

    Root damage is a common problem of overbrushing.

  4. The part of a hair under the skin that holds the hair in place.

    Usage
    • Countable
    • Uncountable
    Examples

    The root is the only part of the hair that is alive.

  5. The part of a hair near the skin that has not been dyed, permed, or otherwise treated.

    Usage
    • Countable
    • Uncountable
    Examples

    He dyed his hair black last month, so the grey roots can be seen.

  6. The primary source; origin.

    Usage
    • Countable
    • Figurative
    • Uncountable
    Examples

    The love of money is the root of all evil.

    They were the roots out of which sprang two distinct people.

    More examples (1)

    Phallicism was, therefore, at the root of all religion, and was definitely the opponent of evil and darkness.

  7. The section of a wing immediately adjacent to the fuselage.

    Usage
    • Countable
    • Uncountable
  8. The bottom of the thread of a threaded object.

    Usage
    • Countable
    • Uncountable
    Antonyms
    Examples

    The root diameter is the minor diameter of an external thread and the major diameter of an internal one.

  9. Of a number or expression, a number which, when raised to a specified power, yields the specified number or expression.

    Usage
    • Countable
    • Uncountable
    Examples

    The cube root of 27 is 3.

  10. A square root (understood if no power is specified; in which case, “the root of” is often abbreviated to “root”).

    Usage
    • Countable
    • Uncountable
    Examples

    Multiply by root 2.

    More examples (1)

    1899, Dante Gabriel Rossetti (transl.), The New Life (La Vita Nuova) of Dante Alighieri, Siddall edition, page 122. The number three is the root of the number nine; […] being multiplied merely by itself, it produceth nine, as we manifestly perceive that three times three are nine.

  11. A zero (of an equation).

    Usage
    • Countable
    • Uncountable
    Synonyms
    Antonyms
  12. The single node of a tree that has no parent.

    Usage
    • Countable
    • Uncountable
  13. The primary lexical unit of a word, which carries the most significant aspects of semantic content and cannot be reduced into smaller constituents. Inflectional stems often derive from roots.

    Usage
    • Countable
    • Uncountable
    Examples

    In ſo moche that if any verbe be of the thyꝛde coniugation / I ſet out all his rotes and tenſes[…]

    A considerable number of derived nominals, especially thematic nouns, also exhibited o-grade roots.

  14. A word from which another word or words are derived.

    Usage
    • Countable
    • Uncountable
    Synonyms
  15. The fundamental tone of any chord; the tone from whose harmonics, or overtones, a chord is composed.

    Usage
    • Countable
    • Uncountable
  16. The lowest place, position, or part.

    Usage
    • Countable
    • Uncountable
    Examples

    deep to the roots of hell

    the roots of the mountains

  17. In UNIX terminology, the first user account with complete access to the operating system and its configuration, found at the root of the directory structure; the person who manages accounts on a UNIX system.

    Usage
    • Countable
    • Uncountable
    Examples

    I have to log in as root before I do that.

  18. The highest directory of a directory structure which may contain both files and subdirectories.

    Usage
    • Countable
    • Uncountable
    Examples

    I installed the files in the root directory.

  19. A penis, especially the base of a penis.

    Usage
    • Countable
    • Slang
    • Uncountable

Verb

  1. To grow roots; to enter the earth, as roots; to take root and begin to grow.

    Examples

    The cuttings are starting to root.

    In deep grounds the weeds root the deeper.

    More examples (1)

    Some old, underfired clay pantiles might be damaged by button mosses rooting in cracks and fissures. But most post-war tiles are hard enough to withstand a bit of moss growth.

  2. To prepare, oversee, or otherwise cause the rooting of cuttings.

    Examples

    We rooted some cuttings last summer.

  3. To fix firmly; to establish.

    Examples

    If any irregularity chanced to intervene and to cause misapprehensions, he gave them not leave to root and fasten by concealment.

    More examples (1)

    Small theater companies come and go very quickly — many times after one show — but community response to Triangle has been strong, and there is a good chance that they will make it through those early growing stages and firmly root.

    Massacres that take place during war often seem to be rooted in irrational emotion.

  4. To get root or privileged access on (a computer system or mobile phone), often through bypassing some security mechanism.

    Usage
    • Slang
    • Transitive
    Synonyms
    Examples

    We rooted his box and planted a virus on it.

    I want to root my Android phone so I can remove the preinstalled crapware.

Verb

  1. To turn up or dig with the snout.

    Usage
    • Transitive or intransitive
    Examples

    A pig roots the earth for truffles.

    Such tunges ſhuld be torne out by the harde rootes,

  2. To seek favour or advancement by low arts or grovelling servility; to fawn.

    Usage
    • broadly
    Examples

    Thou elvish-marked, abortive, rooting hog!

  3. To rummage; to search as if by digging in soil.

    Usage
    • Intransitive
    Examples

    rooting about in a junk-filled drawer

  4. Of a baby: to turn the head and open the mouth in search of food.

    Usage
    • Intransitive
    Examples
    More examples (1)

    When your baby is rooting, his head will turn to the side and he will open and close his mouth. If you put your finger in your baby's hand, she has a grasping reflex that makes her curl her fingers around yours and hold on.

  5. To root out; to abolish.

    Usage
    • Transitive
    Examples

    I will go root away the noisome weeds.

    The Lord rooted them out of their land [...] and cast them into another land.

  6. To tug or pull at the reins aggressively by driving the head downwards while wearing a bit.

    Usage
    • of a horse
  7. To sexually penetrate.

    Usage
    • Australia
    • Ireland
    • New-Zealand
    • Slang
    • Vulgar
    Synonyms

Noun

  1. An act of rummaging or searching.

    Examples

    It was always sensible to get off the busy streets if you were going to have a root inside your girlfriend's bra.

    It'll come to me eventually, but I think I'll go over to Bristol tomorrow afternoon and have a root through the medical school library.

    More examples (1)

    It was not likely a tapestry over two hundred feet long and twenty inches wide was in the dustbin, but Pavel took a root through Laurent's dustbin anyway, just because it was there.

  2. An act of sexual intercourse.

    Usage
    • Australia
    • New-Zealand
    • Slang
    • Vulgar
    Examples

    Fancy a root?

    Ken was in the good mood he'd been in for weeks. Nothing like a regular root to turn him into the jolly green giant.

  3. A sexual partner.

    Usage
    • Australia
    • New-Zealand
    • Slang
    • Vulgar

Verb

  1. To cheer (on); to show support (for) and hope for the success of. (See root for.)

    Usage
    • US usage
    • Intransitive
    • with “for” or “on”
    Synonyms
    Examples

    I'm rooting for you, don't let me down!

    Let me root, root, root for the home team,

Noun

  1. (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground

    Broader terms
  2. the place where something begins, where it springs into being

    Broader terms
    Examples

    the Italian beginning of the Renaissance

    Jupiter was the origin of the radiation

    More examples (2)

    Pittsburgh is the source of the Ohio River

    communism's Russian root

  3. (linguistics) the form of a word after all affixes are removed

    Examples

    thematic vowels are part of the stem

  4. a number that, when multiplied by itself some number of times, equals a given number

    Broader terms
  5. the set of values that give a true statement when substituted into an equation

    Synonyms
    Broader terms
  6. someone from whom you are descended (but usually more remote than a grandparent)

    Broader terms
  7. a simple form inferred as the common basis from which related words in several languages can be derived by linguistic processes

    Synonyms
  8. the embedded part of a bodily structure such as a tooth, nail, or hair

Verb

  1. take root and begin to grow

    Broader terms
    Examples

    this plant roots quickly

  2. come into existence, originate

    Broader terms
    Examples

    The problem roots in her depression

  3. cheer for

    Broader terms
    Examples

    She roots for the Broncos

  4. plant by the roots

    Broader terms
  5. dig with the snout

    Synonyms
    Examples

    the pig was rooting for truffles

  6. become settled or established and stable in one's residence or life style

    Broader terms
    Examples

    He finally settled down

  7. cause to take roots

    Broader terms
Word forms
rootsrootsrootingrootedrootedwroutroutwroot

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