im·mor·tal·i·ty 
(ĭm′ôr-tălĭ-tē)
(ĭm′ôr-tălĭ-tē)n.
1. The quality or condition of being immortal.
2. Endless life or existence.
3. Enduring fame.
- subsonic
- subsp.
- subspecialist
- subspecialization
- subspecialize
- subspecialty
- subspecies
- subspecific
- subst.
- substage
- substance
- substance abuse
- substance abuser
- substance P
- substance use disorder
- substandard
- substantia gelatinosa
- substantial
- substantiality
- substantially
- substantialness
- substantia nigra
- substantiate
- substantiation
- substantival