co·log·a·rithm 
(kō′lôgə-rĭth′əm, -lŏgə-)
(kō′lôgə-rĭth′əm, -lŏgə-)n.
The logarithm of the reciprocal of a number.
- substage
- substance
- substance abuse
- substance abuser
- substance P
- substance use disorder
- substandard
- substantia gelatinosa
- substantial
- substantiality
- substantially
- substantialness
- substantia nigra
- substantiate
- substantiation
- substantival
- substantivally
- substantive
- substantively
- substantiveness
- substantive right
- substation
- substituent
- substitutability
- substitutable