Library / English Dictionary

GROUP

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Any number of entities (members) considered as a unit

Synonyms:

group; grouping

Classified under:

Nouns with no superordinates

Hypernyms ("group" is a kind of...):

abstract entity; abstraction (a general concept formed by extracting common features from specific examples)

Hyponyms (each of the following is a kind of "group"):

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

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

actinide; actinoid; actinon (any of a series of radioactive elements with atomic numbers 89 through 103)

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

scheme; system (a group of independent but interrelated elements comprising a unified whole)

circuit ((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)

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

hoi polloi; mass; masses; multitude; people; the great unwashed (the common people generally)

population (a group of organisms of the same species inhabiting a given area)

citizenry; people (the body of citizens of a state or country)

sainthood (saints collectively)

subgroup (a distinct and often subordinate group within a group)

cloud; swarm (a group of many things in the air or on the ground)

association ((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)

race (people who are believed to belong to the same genetic stock)

ethnic group; ethnos (people of the same race or nationality who share a distinctive culture)

electron shell (a grouping of electrons surrounding the nucleus of an atom)

edition (all of the identical copies of something offered to the public at the same time)

accumulation; aggregation; assemblage; collection (several things grouped together or considered as a whole)

social group (people sharing some social relation)

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

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

biological group (a group of plants or animals)

kingdom (a basic group of natural objects)

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

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

human beings; human race; humanity; humankind; humans; man; mankind; world (all of the living human inhabitants of the earth)

Instance hyponyms:

Great Lakes (a group of five large, interconnected lakes in central North America)

Derivation:

group (arrange into a group or groups)

group (form a group or group together)

Sense 2

Meaning:

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

Synonyms:

group; mathematical group

Classified under:

Nouns denoting cognitive processes and contents

Hypernyms ("group" is a kind of...):

set ((mathematics) an abstract collection of numbers or symbols)

Hyponyms (each of the following is a kind of "group"):

Abelian group; commutative group (a group that satisfies the commutative law)

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

Sense 3

Meaning:

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

Synonyms:

chemical group; group; radical

Classified under:

Nouns denoting substances

Hypernyms ("group" is a kind of...):

building block; unit (a single undivided natural thing occurring in the composition of something else)

Domain category:

chemical science; chemistry (the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions)

Hyponyms (each of the following is a kind of "group"):

vinyl; vinyl group; vinyl radical (a univalent chemical radical derived from ethylene)

uranyl; uranyl group; uranyl radical (the bivalent radical UO2 which forms salts with acids)

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

nitro group (the group -NO3)

butyl (a hydrocarbon radical (C4H9))

propyl; propyl group; propyl radical (the monovalent organic group C3H7- obtained from propane)

methylene; methylene group; methylene radical (the bivalent radical CH2 derived from methane)

ketone group (a group having the characteristic properties of ketones)

hydroxyl; hydroxyl group; hydroxyl radical (the monovalent group -OH in such compounds as bases and some acids and alcohols)

hydrazo group; hydrazo radical (the bivalent group -HNNH- derived from hydrazine)

glyceryl (a trivalent radical derived from glycerol by removing the three hydroxyl radicals)

cyanide group; cyanide radical; cyano group; cyano radical (the monovalent group -CN in a chemical compound)

chromophore (the chemical group that gives color to a molecule)

carboxyl; carboxyl group (the univalent radical -COOH; present in and characteristic of organic acids)

acyl; acyl group (any group or radical of the form RCO- where R is an organic group)

alcohol group; alcohol radical (the chemical group -OH)

aldehyde group; aldehyde radical (the chemical group -CHO)

alkyl; alkyl group; alkyl radical (any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons)

allyl; allyl group; allyl radical (the univalent unsaturated organic radical C3H5; derived from propylene)

amino; amino group (the radical -NH2)

amyl (a hydrocarbon radical that occurs in many organic compounds)

azido group; azido radical (the univalent group N3- derived from hydrazoic acid)

azo group; azo radical (the bivalent group -N=N- united to two hydrocarbon groups)

benzyl; benzyl group; benzyl radical (the univalent radical derived from toluene)

benzoyl group; benzoyl radical (the univalent radical derived from benzoic acid)

arsenic group; cacodyl; cacodyl group; cacodyl radical (the univalent group derived from arsine)

carbonyl group (the bivalent radical CO)

Holonyms ("group" is a part of...):

molecule ((physics and chemistry) the simplest structural unit of an element or compound)

 II. (verb) 

Sense 1

Meaning:

Arrange into a group or groups

Example:

Can you group these shapes together?

Classified under:

Verbs of thinking, judging, analyzing, doubting

Hypernyms (to "group" is one way to...):

assort; class; classify; separate; sort; sort out (arrange or order by classes or categories)

Troponyms (each of the following is one way to "group"):

regroup (reorganize into new groups)

bracket (classify or group)

chunk; collocate; lump (group or chunk together in a certain order or place side by side)

batch (batch together; assemble or process as a batch)

Sentence frames:

Somebody ----s something
Somebody ----s somebody

Derivation:

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

grouping (the activity of putting things together in groups)

Sense 2

Meaning:

Form a group or group together

Synonyms:

aggroup; group

Classified under:

Verbs of fighting, athletic activities

Hypernyms (to "group" is one way to...):

assemble; foregather; forgather; gather; meet (collect in one place)

Troponyms (each of the following is one way to "group"):

team; team up (form a team)

embed (attach to, as a journalist to a military unit when reporting on a war)

gang; gang up (act as an organized group)

pool (join or form a pool of people)

brigade (form or unite into a brigade)

Sentence frame:

Somebody ----s something

Sentence example:

The crowds group in the streets

Derivation:

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

grouping (the activity of putting things together in groups)

Credits

 Context examples: 

Transformation of a mature, normal cell or groups of mature cells to other forms of mature cells.

(Metaplasia, NCI Thesaurus)

Methyl groups are added or removed from proteins or nucleic acids and may change the way these molecules act in the body.

(Methyl group, NCI Dictionary)

This is done by interfering with the oxidation of iodide ion and iodotyrosyl groups through inhibition of the peroxidase enzyme.

(Methimazole, NLM, Medical Subject Headings)

To the north, and not far away, a group of naked rocks thrust above the sea, on one of which I could distinguish a lighthouse.

(The Sea-Wolf, by Jack London)

A usually short communication transmitted by words, signals, or other means from one person, station, or group to another.

(Message, NCI Thesaurus)

Using magnetoencephalography (MEG), they showed that while our brain is still able to perceive sounds during sleep, it is unable to group these sounds according to their organisation in a sequence.

(Learning While Sleeping?, The Titi Tudorancea Bulletin)

An adenine nucleotide comprised of three phosphate groups esterified to the sugar moiety, found in all living cells.

(Adenosine triphosphate, NCI Thesaurus)

The research group started with 80 individuals and then replicated their initial findings in two additional populations.

(International Research Team Finds Correlation Between Genetics and Obesity Is Modified by Diet, U.S. Department of Agriculture)

A group of pharmacokinetic parameters commonly investigated during preclinical drug development.

(ADME Study, NCI Thesaurus)

Evidently, the red tufts of hair must have had symbolic value for these social groups.

(Hair was dyed for first time as part of funeral rituals, University of Granada)