hornwort hornworm • horny · · · Info · Definitions · Characters · · hornwort · · Text Latin · · Script 8 · · Length Definitions · · · (noun) any aquatic plant of the genus Ceratophyllum; forms submerged masses in ponds and slow-flowing streams. · · Noun Definition 1 (noun) liverworts with slender hornlike capsules. · · Noun Definition 2 Characters · · h latin small letter h U+0068 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 w latin small letter w U+0077