-osum Morpheme -osum Type suffix Denotation adjective suffix denoting “full of, abundant in” Etymology Latin ōsum, from -ōsus Evidence cavernosum, spinosum, spongiosum See Also -os(e) [-ose, -os], -ous, -osus, -osi, -oso, -osa, -osae, -eux, -euse Share on FacebookTweetSave