horned pondweed horned owl • horned poppy · · · Info · Definitions · Synonyms · Characters · · horned pondweed · · Text Common · · Latin · · Scripts 15 · · Length 2 · · Syllables Definitions · · · (noun) found in still or slow-moving fresh or brackish water; useful to oxygenate cool water ponds and aquaria. Synonyms: horned pondweed, Zannichellia palustris. · · Noun Definition 1 Synonyms · · · zannichellia palustris · · Synonym 1 Characters · · space U+0020 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 w latin small letter w U+0077