blood platelet blood plasma • blood plum · · · Info · Definitions · Synonyms · Characters · · blood platelet · · Text Common · · Latin · · Scripts 14 · · Length 4 · · Syllables Definitions · · · (noun) tiny bits of protoplasm found in vertebrate blood; essential for blood clotting. Synonyms: platelet, blood platelet, thrombocyte. · · Noun Definition 1 Synonyms · · · platelet · · Synonym 1 thrombocyte · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 l latin small letter l U+006C o latin small letter o U+006F p latin small letter p U+0070 t latin small letter t U+0074