词根：fil = thread（线）, to spin（纺织）, foul（脏）

  来源于拉丁语的filum(=thread,to spin)。

同源词：

1. defile [使变得非常脏de(=intensive)+fil(=foul)]
  n. 小路；峡道（从山上开出来的路，远远看去就像一条线似的）
  vt. 弄脏；亵渎
  defilement n.弄脏
  The mountain steam was defiled by the town's raw sewage. 该市未经处理的污水污染了山上流下来的溪水。

2. filament
  n.细丝；单纤维；（雄蕊的）花丝；（电灯泡、电子管的）灯丝 *fil(= thread)
  filamentous  adj.丝状的

3. filature
  n.缨丝；缫丝厂 *fil(=thread)

4. file
  n.文件夹；档案；（排队的人、物的）列以锉；存档；捧成纵列行进；提出（申请、抗议等）；提起（诉讼）*fil(=thread)
  file cabinet 文件柜
  file numbef 文档嫡号
  file punch 文件穿孔器
  on file 存档
  in single file 成一列纵队 
  the rank and file  普通士兵；庶民
  file suit for a divorce 提起离婚诉讼

5. filings
  n.锉屑 *fil(=thread)

6. fillet
  n.（用做装饰的）带子；（去掉骨头的）肉片，鱼片以把（鱼、肉）切成片 fil(= thread)
  filleted plaice  切成片的镰鱼

7. profile
  n. 人物简介；侧影，侧面；轮廓 v. 画出…的轮廓；勾画侧面图；写人物简介 *pro(=before),fil(=thread)
  portrait drawn in profile 侧影肖像
  line of hills profiled against the night sky 以夜空为背景的山的轮廓

8. filth
  n.污物，肮脏；淫猥 *fil(= foul)

9. filthy
  adj.肮脏的；淫猥的 *fil(= foul)
  filthy lucre  肮脏的钱财

10. filiform确良[fil 线，-i- 中缀，form 形状]
  adj. 丝状的；花丝的；如丝的

11. unifilar [uni 单一，fil 线，后缀-ar ...的]
  adj.单线的

词根词缀：fibro-, fibr-, fiber-

【来源及含义】Latin: fiber [an elongated, threadlike structure]; a combining form denoting a relationship to fibers

【同源单词】adenofibroma, adenofibrosis, adipofibroma, angiofibroblastoma, angiofibrolipoma, angiofibroma

词根词缀：filo-, fil-, filari-

【来源及含义】Latin: thread, string

【同源单词】defile, fila radicularia nervorum spinalium, filaceous, filament, filamentous, filar

词根词缀：lino-, lin-, line-

【来源及含义】Greek > Latin: line, thread, string, cord, net

【同源单词】align, alignment, allineate, collimate, collinear, delineate

词根词缀：mito-, mit-

【来源及含义】Greek: thread

【同源单词】karyomitotic, mitochondria, mitochondrial, mitochondrion, mitogen, mitogenesia

词根词缀：nemato-, nemat-, nemati-

【来源及含义】Greek: thread, that which is spun; pertaining to a thread-like structure used in many scientific terms

【同源单词】chromonema, chromonemata, chromonematic, Nectonematoidea, nema, nemaline

词根词缀：seri-, ser-

【来源及含义】Latin: serere, a string, a thread; a row, succession, sequence; to join together, to connect, to combine

【同源单词】assert, asserted, asserter, asserting, assertion, assertive

词根词缀：tricho-, trich-, -tricha, -trichia, -trichan, -trichic, -trichosis, -trichous, -thrix, -trichum, -trichy

【来源及含义】Greek: hair [thread; filament; condition of the hair]

【相关词根词缀】 Links to other hair-related units: alopec-; barba-; Beards; capillaro-; chaeto-; cirro-; coife; crino-; Hair & Beard Styles; hirsute; pilo-; pogo-; villi-.

【同源单词】achromatrichia, achromotrichia, actinotrich, actinotrichia, amphitrichous, atrichia