sieve tube sieve tissue • sieve vessel · · · Info · Definitions · Characters · · sieve tube · · Text Common · · Latin · · Scripts 10 · · Length 2 · · Syllables Definitions · · · (noun) tube formed by cells joined end-to-end through which nutrients flow in flowering plants and brown algae. Synonyms: sieve tube. · · Noun Definition 1 Characters · · space U+0020 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076