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isolate

/ˈaɪ.sə.leɪt/
verbB24 meaningsCommon in everyday speech and writing · #4,930 of 15,258neutral

Other forms: isolated, isolating, isolates

To isolate something is to cut it off from everything around it and leave it on its own. A patient moved into a side room, a village left alone by a week of snow, one wire lifted out of a bundle so you can test it.

It works on people and on things. Isolate a person and you leave them lonely; isolated is the adjective for both the person and the farmhouse with no neighbours. Science leans on it hard: researchers isolate a virus, a gene, a fault, meaning they pull one thing out of the mess around it so they can look at it alone. In a lab the noun isolate — EYE-so-lat, with the last syllable flattened — is the sample that has been separated out. Keep it apart from insulate, which is wrapping something to hold heat or electricity in.

Definitions of isolate

  1. 1verbisolateTo separate someone or something from everything else and keep it apart.B2

    “The storm isolated the village for four days.”

    synonyms: separate, cut off

  2. 2verbsickTo keep a sick person or animal away from others so an infection does not spread.B2

    “Anyone with symptoms had to isolate at home for a week.”

  3. 3verbfindTo find one thing among many and separate it out so it can be studied or repaired.B2

    “The engineers isolated the fault to a single circuit board.”

  4. 4nounorganismA single organism or substance that has been separated from a sample.C1

    “The isolate was sent to another lab for sequencing.”

Also accepted in games: separate

Where it comes from

Isolate came into English backwards. English first borrowed the adjective isolated, from French isole, itself from Italian isolato and Latin insulatus; only afterwards did speakers trim the ending and make a verb out of it. That same Latin word also gave English insulate, which is why the two look like twins and do different jobs.

  1. Latin

    īnsulātus

  2. Italian

    isolato

  3. French

    isolé

  4. English, today

    isolate

a back-formation from isolated, from French isolé, from Italian isolato, from Latin īnsulātus (whence also insulate), see -ate.

Etymology from Wiktionary, CC BY-SA

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Related words

  • isolation