-stomi
I. -stomi
plural of -stomus
II. -sto·mi\stəˌmī\  noun plural combining form 
Etymology: New Latin, from Greek stoma mouth — more at stomach 
 : creatures having (such) a mouth or opening  — in names of higher taxa in zoology
< Plagiostomi >
< Aulostomi >
< Selachostomi >
I. -stomi
plural of -stomus
II. -sto·mi
< Plagiostomi >
< Aulostomi >
< Selachostomi >