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individual

[in-duh-vij-oo-uh l]
noun
  1. a single human being, as distinguished from a group.
  2. a person: a strange individual.
  3. a distinct, indivisible entity; a single thing, being, instance, or item.
  4. a group considered as a unit.
  5. Biology.
    1. a single organism capable of independent existence.
    2. a member of a compound organism or colony.
  6. Cards. a duplicate-bridge tournament in which each player plays the same number of hands in partnership with every other player, individual scores for each player being kept for each hand.
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adjective
  1. single; particular; separate: to number individual copies of a limited edition.
  2. intended for the use of one person only: to serve individual portions of a pizza.
  3. of, relating to, or characteristic of a particular person or thing: individual tastes.
  4. distinguished by special, singular, or markedly personal characteristics; exhibiting unique or unusual qualities: a highly individual style of painting.
  5. existing as a distinct, indivisible entity, or considered as such; discrete: individual parts of a tea set.
  6. of which each is different or of a different design from the others: a set of individual coffee cups.
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Origin of individual

1375–1425; late Middle English < Medieval Latin indīviduālis, equivalent to Latin indīvidu(us) indivisible (in- in-3 + dīvid(ere) to divide + -uus deverbal adj. suffix) + -ālis -al1
Related formsin·ter·in·di·vid·u·al, adjectivenon·in·di·vid·u·al, adjectivesu·per·in·di·vid·u·al, adjective, nounsu·per·in·di·vid·u·al·ly, adverbtrans·in·di·vid·u·al, adjective
Can be confusedindividual party person (see usage note at the current entry) (see synonym study at person)

Synonym study

2. See person.

Usage note

1, 2. As a synonym for person, individual is standard, occurring in all varieties of speech and writing: Three individuals entered the room, each carrying a sheaf of papers. Some object to this use, insisting that individual can mean only “a single human being, as distinguished from a group”: An individual may have concerns that are ignored by his or her party.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for interindividual

individual

adjective
  1. of, relating to, characteristic of, or meant for a single person or thing
  2. separate or distinct, esp from others of its kind; particularplease mark the individual pages
  3. characterized by unusual and striking qualities; distinctive
  4. obsolete indivisible; inseparable
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noun
  1. a single person, esp when regarded as distinct from others
  2. biology
    1. a single animal or plant, esp as distinct from a species
    2. a single member of a compound organism or colony
  3. logic
    1. Also called: particularan object as opposed to a property or class
    2. an element of the domain of discourse of a theory
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Derived Formsindividually, adverb

Word Origin for individual

C15: from Medieval Latin indīviduālis, from Latin indīviduus indivisible, from in- 1 + dīviduus divisible, from dīvidere to divide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for interindividual

individual

n.

"single object or thing," c.1600, from individual (adj.). Colloquial sense of "person" is attested from 1742. Latin individuum meant "an atom, indivisible particle;" in Middle English individuum was used in sense of "individual member of a species" from early 15c.

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individual

adj.

early 15c., "one and indivisible" (with reference to the Trinity), from Medieval Latin individualis, from Latin individuus "indivisible," from in- "not, opposite of" (see in- (1)) + dividuus "divisible," from dividere "divide" (see divide). Not common before c.1600 and the 15c. usage might be isolated. Sense of "single, separate" is 1610s; meaning "intended for one person" is from 1889.

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Online Etymology Dictionary, © 2010 Douglas Harper