noun🔗ShareGrisúAn inflammable gas (mostly methane) found in coal mines; forms an explosive mixture with air."The old coal mine was sealed off due to the constant danger of firedamp explosions. "La antigua mina de carbón fue sellada debido al peligro constante de explosiones de grisú.substancematerialgeologyenergychemistryenvironmentdisasterfuelindustryChat with AIVocabulary GamePractice Reading