avitaminosis
Concise Oxford English Dictionary © 2008 Oxford University Press:
avitaminosis /eɪˌvɪtəmɪˈnəʊsɪs, -ˌvʌɪt-/
▶noun (pl. avitaminoses /-siːz/) Medicine a condition resulting from a deficiency of a particular vitamin.
'avitaminosis' also found in these Oxford entries:

