sinus venosus defined in 1951 yearsinus venosus - sinus venosus;
sinus venosus - Chamber of vertebrate heart, lying between veins and auricle(s); thin-walled; absent in adult birds and mammals. See also: Pacemaker. siphonaceous (siphonous). Term applied to coenocytic, sac-like or more or less tubular, filamentous algae.
near sinus venosus in Knolik
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