cryp·to·nym 
(krĭptə-nĭm′)
(krĭptə-nĭm′)n.
A word or name that is used secretly to refer to another; a code name or code word.
- biochemically
- biochemical oxygen demand
- biochemist
- biochemistry
- biochip
- biocidal
- biocide
- bioclimatic
- bioclimatology
- biocoenosis
- biocompatibility
- biocompatible
- biocomputing
- biocontainment
- biocontrol
- bioconversion
- biodegradability
- biodegradable
- biodegradation
- biodegrade
- biodiesel
- biodiversification
- biodiversified
- biodiversity
- bioelectric