Biosystems rhymes with:
argosystems, ecosystems, microsystems', argosystems, cablesystems, ecosystems, microsystems', subsystems, techsystems, ultrasystems
Biosystems sounds like:
babysitting, backdating, bagdonas, basting, bastions, begetting, besetting, besting, bestowing, boasting, bogdanowicz, bogdanski, boosting, boston's, bostonians, boycotting, busting