荚硫菌属：红硫菌目(Rhodospirillales)、着色菌科(Chromatiaceae)的水生光能利用菌，菌细胞球形，不活动，内无气泡，能在有硫化氢存在的情况下固定二氧化碳。细胞悬液呈黄棕至淡红或紫色；模式种是桃红荚硫菌(T. roseopersicina)两种- urethrocystogram
- urethrocystography
- urethrocystopexy
- urethrodynia
- urethrograph
- urethrography
- urethrometer
- urethrometry
- urethropenile
- urethroperineal
- urethroperineoscrotal
- urethropexy
- urethrophraxis
- urethrophyma
- urethroplasty
- urethroprostatic
- urethrorectal
- urethrorrhagia
- urethrorrhaphy
- urethrorrhea
- urethroscope
- urethroscopic
- urethroscopy
- urethroscrotal
- urethrospasm