— spirillar , adj.
/spuy ril"euhm/ , n. , pl. spirilla /-ril"euh/ . Bacteriol.
1. any of several spirally twisted, aerobic bacteria of the genus Spirillum, certain species of which are pathogenic for humans. See diag. under bacteria .
2. any of various similar microorganisms.
[ 1870-75; spir ( a ) (see SPIRE 2 ) + -illum dim. suffix ]