| Noun | 1. | rachitis - inflammation of the vertebral column inflammation, redness, rubor - a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat |
| 2. | rachitis - childhood disease caused by deficiency of vitamin D and sunlight associated with impaired metabolism of calcium and phosphorusavitaminosis, hypovitaminosis - any of several diseases caused by deficiency of one or more vitamins |