1) Degeneration 
Abiotrophia is a genus of lactic acid bacteria, a family in the phylum Firmicutes (Bacteria). The genus contains 4 species of coccus shaped species, 2 are former members of the genus Streptococcus, which were transferred in 1995 to the newly coined genus Abiotrophia: Other 2 are latter additions: ==Etymology== The name Abiotrophia derives from: Gr...
abiotrophia Degeneration; loss of physical vitality or ability.