Group Definition

Define what is Group?

1. group, grouping (noun)

any number of entities (members) considered as a unit.

    Synonyms: grouping

    abstract entity, abstraction noun
    a general concept formed by extracting common features from specific examples.


    human beings, human race, humankind, humans, mankind, humanity, world, Man noun
    all of the living human inhabitants of the earth.

    arrangement noun
    an orderly grouping (of things or persons) considered as a unit; the result of arranging.

    straggle noun
    a wandering or disorderly grouping (of things or persons).

    kingdom noun
    a basic group of natural objects.

    biological group noun
    a group of plants or animals.

    biotic community, community noun
    (ecology) a group of interdependent organisms inhabiting the same region and interacting with each other.

    people noun
    (plural) any group of human beings (men or women or children) collectively.

    social group noun
    people sharing some social relation.

    aggregation, collection, accumulation, assemblage noun
    several things grouped together or considered as a whole.

    edition noun
    all of the identical copies of something offered to the public at the same time.

    electron shell noun
    a grouping of electrons surrounding the nucleus of an atom.

    ethnic group, ethnos noun
    people of the same race or nationality who share a distinctive culture.

    race noun
    people who are believed to belong to the same genetic stock.

    association noun
    (ecology) a group of organisms (plants and animals) that live together in a certain geographical region and constitute a community with a few dominant species.

    swarm, cloud noun
    a group of many things in the air or on the ground.

    subgroup noun
    a distinct and often subordinate group within a group.

    sainthood noun
    saints collectively.

    citizenry, people noun
    the body of citizens of a state or country.

    population noun
    a group of organisms of the same species inhabiting a given area.

    hoi polloi, masses, the great unwashed, multitude, people, Mass noun
    the common people generally.

    Varna noun
    (Hinduism) the name for the original social division of Vedic people into four groups (which are subdivided into thousands of jatis).

    circuit noun
    (law) a judicial division of a state or the United States (so-called because originally judges traveled and held court in different locations); one of the twelve groups of states in the United States that is covered by a particular circuit court of appeals.

    system, scheme noun
    a group of independent but interrelated elements comprising a unified whole.

    series noun
    a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection.

    actinide, actinoid, actinon noun
    any of a series of radioactive elements with atomic numbers 89 through 103.

    lanthanide, lanthanoid, lanthanon, rare-earth element, rare earth noun
    any element of the lanthanide series (atomic numbers 57 through 71).

    halogen noun
    any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions.

    2. group (verb)

    arrange into a group or groups.

    • Can you group these shapes together?.

    class, classify, sort out, assort, sort, separate verb
    arrange or order by classes or categories.


    regroup verb
    reorganize into new groups.

    bracket verb
    classify or group.

    chunk, collocate, lump verb
    group or chunk together in a certain order or place side by side.

    batch verb
    batch together; assemble or process as a batch.

    3. chemical group, radical, group (noun)

    (chemistry) two or more atoms bound together as a single unit and forming part of a molecule.


      building block, unit noun
      a single undivided natural thing occurring in the composition of something else.


      acyl, acyl group noun
      any group or radical of the form RCO- where R is an organic group.

      alcohol group, alcohol radical noun
      the chemical group -OH.

      aldehyde group, aldehyde radical noun
      the chemical group -CHO.

      alkyl, alkyl group, alkyl radical noun
      any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons.

      allyl, allyl group, allyl radical noun
      the univalent unsaturated organic radical C3H5; derived from propylene.

      amino, amino group noun
      the radical -NH2.

      amyl noun
      a hydrocarbon radical that occurs in many organic compounds.

      azido group, azido radical noun
      the univalent group N3- derived from hydrazoic acid.

      azo group, azo radical noun
      the bivalent group -N=N- united to two hydrocarbon groups.

      benzyl, benzyl group, benzyl radical noun
      the univalent radical derived from toluene.

      benzoyl group, benzoyl radical noun
      the univalent radical derived from benzoic acid.

      arsenic group, cacodyl group, cacodyl radical, cacodyl noun
      the univalent group derived from arsine.

      carbonyl group noun
      the bivalent radical CO.

      carboxyl, carboxyl group noun
      the univalent radical -COOH; present in and characteristic of organic acids.

      chromophore noun
      the chemical group that gives color to a molecule.

      cyanide group, cyanide radical, cyano group, cyano radical noun
      the monovalent group -CN in a chemical compound.

      glyceryl noun
      a trivalent radical derived from glycerol by removing the three hydroxyl radicals.

      hydrazo group, hydrazo radical noun
      the bivalent group -HNNH- derived from hydrazine.

      hydroxyl, hydroxyl group, hydroxyl radical noun
      the monovalent group -OH in such compounds as bases and some acids and alcohols.

      ketone group noun
      a group having the characteristic properties of ketones.

      methylene, methylene group, methylene radical noun
      the bivalent radical CH2 derived from methane.

      propyl, propyl group, propyl radical noun
      the monovalent organic group C3H7- obtained from propane.

      butyl noun
      a hydrocarbon radical (C4H9).

      nitro group noun
      the group -NO3.

      nitrite noun
      the radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid).

      uranyl, uranyl group, uranyl radical noun
      the bivalent radical UO2 which forms salts with acids.

      vinyl, vinyl group, vinyl radical noun
      a univalent chemical radical derived from ethylene.

      4. aggroup, group (verb)

      form a group or group together.

        Synonyms: aggroup

        foregather, forgather, assemble, gather, meet verb
        collect in one place.


        team, team up verb
        form a team.

        embed verb
        attach to, as a journalist to a military unit when reporting on a war.

        gang, gang up verb
        act as an organized group.

        pool verb
        join or form a pool of people.

        brigade verb
        form or unite into a brigade.

        5. mathematical group, group (noun)

        a set that is closed, associative, has an identity element and every element has an inverse.


          Set noun
          (mathematics) an abstract collection of numbers or symbols.


          subgroup noun
          (mathematics) a subset (that is not empty) of a mathematical group.

          Abelian group, commutative group noun
          a group that satisfies the commutative law.

          Nearby Terms

          group A (noun)
          the blood group whose red cells carry the A antigen

          group AB (noun)
          the blood group whose red cells carry both the A and B antigens

          group action (noun)
          action taken by a group of people

          group Amentiferae (noun)
          used in some classification systems for plants that bear catkins

          group B (noun)
          the blood group whose red cells carry the B antigen

          group captain (noun)
          a commissioned officer (especially one in the Royal Air Force) equivalent in rank to a colonel in the army

          group Centrospermae (noun)
          used in former classification systems; approximately synonymous with order Caryophyllales

          group discussion (noun)
          a discussion among participants who have an agreed (serious) topic

          group dynamics (noun)
          the branch of social psychology that studies the psychodynamics of interaction in social groups

          group insurance (noun)
          insurance that is purchased by a group (such as the employees of a company) usually at a reduced rate to individual members of the group

          group meeting (noun)
          a formally arranged gathering

          group O (noun)
          the blood group whose red cells carry neither the A nor B antigens

          group participation (noun)
          participation by all members of a group

          group practice (noun)
          (medicine) the practice of medicine by a group of physicians who share their premises and other resources

          group psychotherapy (noun)
          psychotherapy in which a small group of individuals meet with a therapist; interactions among the members are considered to be therapeutic