火か綿めんMeanings1nouncolloxylin; pyroxylinTechnical term for a highly flammable nitrocellulose compound; synonymous with 綿火薬 (めんかやく).See also: 綿火薬火か綿めんは、ニトロセルロースを主しゅ成せい分ぶんとする火か薬やくの一いっ種しゅです。Colloxylin is a type of explosive whose main component is nitrocellulose.