名詞 commissure:

1. a bundle of nerve fibers passing from one side to the other of the brain or spinal cord

com.mis.sure

n.（名詞）
A line or place at which two things are joined.
接合處；接合點：聯合兩物的線或地方
Anatomy
【解剖學】
A tract of nerve fibers passing from one side to the other of the spinal cord or brain.
連合：從脊髓或腦的一邊到另一邊的神經纖維系統
The point or surface where two parts, such as the eyelids, lips, or cardiac valves, join or form a connection.
連合：連合兩部分例如眼瞼、嘴唇或心臟瓣膜聯合或形成連接的點或面
Botany The surface or place along which two structures, such as carpels, are joined.
【植物學】 接著面：兩個組織連接的面或地方，例如心皮

來源：
Middle English
中古英語
from Latin commissôra
源自 拉丁語 commissôra
from commissus [past participle of] committere [to join] * see commit
源自 commissus [] committere的過去分詞 [連接] *參見 commit

【引伸】
com.missu.ral
adj.（形容詞）