微丝血管 wēisīxuèguǎn capillaries Origin Definitions Defs Strokes Stroke Words Sentences Sents 微丝 微絲 wēisī microfilament microfilament; any of the thin protein filaments found in the cytoplasm of eukaryotic cells血管 xuèguǎn noun blood vessel the tubular pathways of the circulatory system, including arteries, veins, and capillaries