Synonym for myofibril ... <cell biology> Long cylindrical organelle of striated muscle, composed of regular arrays of thick and thin filaments and constituting the contractile apparatus. ... (18 Nov 1997) ... Found on http://www.encyclo.co.uk/local/20973
myofibrilla (s), myofibrillae (pl) 1. One of many contractile filaments that make up a striated muscle fiber. 2. Long cylindrical organelle of striated muscle, composed of regular arrays of thick and thin filaments and constituting the contractile apparatus Found on http://www.wordinfo.info/words/index/info/view_unit/792/