from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various abnormal conditions in which the physiological effect of a vitamin is produced to a pathological degree by excessive intake of the vitamin.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any medical condition resulting from excessive intake of vitamins.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an abnormal condition resulting from taking vitamins excessively; can be serious for vitamins A or D or K
From hyper- + vitamin + -osis. (Wiktionary)