filament
n.
"fine untwisted thread, separate fibril," 1590s, from Modern Latin filamentum, from Late Latin filare "to spin, draw out in a long line," from Latin filum "thread" (see file, v.1). As the name of the incandescent element in a light-bulb, from 1881.
〔李〕[fil;-a-;-mentn.] n.细丝； 单纤维 ←fil (L filum)=thread, line, outline 线，轮廓
〔蒋〕[fil线，-a-，-ment名词后缀] 细线，丝，线状物