gravis
adjective
gra·vis
| \ ˈgra-vəs
, ˈgrä-
, ˈgrā-
\
, ˈgrä-
, ˈgrā-
\
Medical Definition of gravis
: tending to be more virulent than average
—used especially of strains of diphtheria bacilli
— see icterus gravis, icterus gravis neonatorum, myasthenia gravis — compare intermedius, mitis