WordReference Random House Learner's Dictionary of American English © 2015
i•so•late /v. ˈaɪsəˌleɪt; n., adj. -lɪt, -ˌleɪt/USA pronunciation   v. [+ object],-lat•ed, -lat•ing. 
  1. to set or place apart;
    separate so as to be alone:He was isolated in a little cubicle by himself.
  2. Medicineto keep (an infected person) from contact with noninfected persons; quarantine.
  3. Chemistry, Microbiologyto obtain (a chemical substance or microorganism) in a separate or pure state, not in combination with other substances.
i•so•la•tion /ˌaɪsəˈleɪʃən/USA pronunciation  n. [uncountable]a desperate feeling of isolation in the big city.

WordReference Random House Unabridged Dictionary of American English © 2015
i•so•late  (v. īsə lāt′, isə-;n., adj. īsə lit, -lāt′, isə-), 
v., -lat•ed, -lat•ing, n., adj. 

  1. to set or place apart;
    detach or separate so as to be alone.
  2. Medicine[Med.]to keep (an infected person) from contact with noninfected persons;
  3. Chemistry, Microbiology[Chem., Bacteriol.]to obtain (a substance or microorganism) in an uncombined or pure state.
  4. Electricity[Elect.]to insulate.
  5. Radio and Television, Show Business[Television.]to single out (a person, action, etc.) for a camera closeup.

  1. Linguisticsa person, thing, or group that is set apart or isolated, as for purposes of study.
  2. Psychology[Psychol.]a person, often shy or lacking in social skills, who avoids the company of others and has no friends within a group.
  3. Genetics, Biology[Biol.]an inbreeding population that is isolated from similar populations by physiological, behavioral, or geographic barriers.
  4. Linguistics[Ling.]a language with no demonstrable genetic relationship, as Basque.
  5. something that has been isolated, as a by-product in a manufacturing process:an isolate of soy flour.

  1. isolated;
  • back formation from isolated 1800–10
iso•la′tor, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

isolate vb /ˈaɪsəˌleɪt/(transitive)
  1. to place apart; cause to be alone
  2. to quarantine (a person or animal) having or suspected of having a contagious disease
  3. to obtain (a compound) in an uncombined form
  4. to obtain pure cultures of (bacteria, esp those causing a particular disease)
  5. to prevent interaction between (circuits, components, etc); insulate
n /ˈaɪsəlɪt/
  1. an isolated person or group
Etymology: 19th Century: back formation from isolated, via Italian from Latin insulātus, literally: made into an island; see insulate

ˈisolable adj ˌisolaˈbility n ˈisoˌlator n

'isolated' also found in these entries:

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