bentonite Benton • bentstar · · · Info · Definitions · Characters · · bentonite · · Text Latin · · Script 9 · · Length Definitions · · · (noun) an absorbent aluminum silicate clay formed from volcanic ash. · · Noun Definition 1 Characters · · b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074