pro-ana UK /ˌpɹoʊˈæ.nə/US /ˌpɹəʊˈæ.nə/ noun2 •A movement for the promotion of behaviors related to anorexia nervosa.Pro-ana is not a disease, Mr. Crane, it's a lifestyle choice. — 2006 •A member of this movement.Beyond celebrating the aesthetic value of thinness, pro-anas claim that thinness is a reflection of excellence in other areas of one's life. — 2004 formspro-anas