duramen

名词 duramen:

1. the older inactive central wood of a tree or woody plant; usually darker and denser than the surrounding sapwood
   同义词：heartwood

du.ra.men

n.Botany （名词）【植物学】
See heartwood
参见 heartwood

来源：
Latin dôr3men [hard growth of a vine]
拉丁语 dôr3men [硬的藤蔓]
from dôr3re [to harden]
源自 dôr3re [硬的]
from dôrus [hard] * see deru-
源自 dôrus [硬] *参见 deru-