Italian

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Etymology

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From iso- +‎ butano.

Noun

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isobutano m (plural isobutani)

  1. (organic chemistry) isobutane

Portuguese

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Noun

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isobutano m (uncountable)

  1. (organic chemistry) isobutane (a hydrocarbon: C4H10)

Spanish

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Spanish Wikipedia has an article on:
Wikipedia es

Noun

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isobutano m (plural isobutanos)

  1. (organic chemistry) methylpropane
    Synonym: metilpropano