Definition of "osteo"

The blunting could be caused by endocarditis, an infection of the heart lining occasionally associated with a staph infection which has developed into osteomyelitis. Perhaps her intuition was right. But if Richard had osteo, special treatment was long overdue.

1965, The Reader's Digest, volume 86, page 148

But my osteo plagued me throughout the rest of my stay at the HNOH, and for several years even after leaving the Home. It wasn't until the discovery of penicillin and the sulfa drugs that I finally beat that condition.

2000, Sam George Arcus, Deja Views of an Aging Orphan: Growing up in the Hebrew National Orphan Home