无头亚目：过去分类系统中是真簇虫目(order Eugregarinida)中的原虫亚目，为虫体不分隔的无隔簇虫，现已列入囊簇虫簇亚目(suborder Blastogregarinina)和无隔亚目(suborder Aseptatina)- fibromatosis
- fibromatous
- fibromectomy
- fibromembranous
- fibromuscular
- fibromyitis
- fibromyoma
- fibromyomectomy
- fibromyositis
- fibromyotomy
- fibromyxoma
- fibromyxosarcoma
- fibronectin
- fibroneuroma
- fibronuclear
- fibro-osteoma
- fibropapilloma
- fibropituicyte
- fibroplasia
- fibroplastic
- fibroplastin
- fibroplate
- fibropolypus
- fibropurulent
- fibroreticulate