keratin

名词 keratin:

1. a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair feathers nails and hooves
   同义词：ceratin

1. A human hair consists mainly of a protein called Keratin. It also contains some moisture and the trace metals and minerals found in the rest of the body.
   人类的头发主要由一种叫角朊的蛋白质组成，并含有水分及在身体其他部分也可找到的微量金属和矿物质。

ker.a.tin

n.（名词）
A tough, insoluble protein substance that is the chief structural constituent of hair, nails, horns, and hoofs.
角蛋白：一种不溶解的较硬的蛋白物质，是头发、指甲、角和蹄的主要结构成分

来源：
Greek keras kerat- [horn] * see ker-
希腊语 keras kerat- [角] *参见 ker-
-in
-in

【引伸】
kerat.inous