Meaning of “anorexia” - Learner’s Dictionary

anorexia

noun [ U ] us uk /ˌænərˈeksiə/ also anorexia nervosa, uk /ænərˌeksiənɜːˈvəʊsə/ us

a mental illness in which someone refuses to eat and becomes very thin

(Definition of “anorexia” from the Cambridge Learner’s Dictionary © Cambridge University Press)