incombustible

From in- +‎ combust +‎ -ible.

• IPA^(key): /ˌɪŋkəmˈbʌstɪbəl/

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incombustible (comparative more incombustible, superlative most incombustible)

1. Not capable of catching fire and burning; not flammable.
   • 1921, Charles Kenneth Leith, The Economic Aspect of Geology, page 124:

     The ash represents the more incombustible mineral matter, usually of the nature of clay or slate.

• (antonym(s) of “not flammable”): combustible, flammable (US), inflammable (UK)

incombustible (plural incombustibles)

1. Any substance that is not flammable.

Borrowed from Latin incombustibilis.

incombustible m or f (masculine and feminine plural incombustibles)

1. not capable of catching fire and burning; not flammable

   Antonym: combustible

• “incombustible”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007
• “incombustible”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2025
• “incombustible” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “incombustible” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

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incombustible (plural incombustibles)

1. incombustible

• “incombustible”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

Borrowed from Latin incombustibĭle.

• IPA^(key): /inkombusˈtible/ [ĩŋ.kõm.busˈt̪i.β̞le]
• Rhymes: -ible
• Syllabification: in‧com‧bus‧ti‧ble

incombustible m or f (masculine and feminine plural incombustibles)

1. not capable of catching fire and burning; not flammable

   Antonym: combustible

• “incombustible”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 10 December 2024