xy·lem
noun/ˈzaɪləm/
/ˈzaɪləm/
[uncountable] (biology)- the material in plants that carries water and minerals upwards from the root
木质部（植物中将水分和矿物质从根部向上输送的组织） Word Originlate 19th cent.: from Greek xulon ‘wood’ + the passive suffix -ēma.