单极虫属：微孢子目(Microsporida)泛成孢子亚目(Pansporoblastina)中一属原虫，寄生于某些库蚊和按蚊幼虫及啮齿动物脑中- chlorovinyldichloroarsine
- chloroxine
- chloroxylenol
- chlorphenamidine
- chlorphenesin
- chlorpheniramine
- chlorphenoxamine hydrochloride
- chlorphentermine hydrochloride
- chlorpromazine
- chlorpropamide
- chlorprophenpyridamine
- chlorprothixene
- chlorquinaldol
- chlortetracycline
- chlorthalidone
- Chlor-Trimeton
- chlorum
- chloruresis
- chloruretic
- chloruria
- chlorzoxazone
- Ch.M.
- choana
- choanae
- choanal