anterior pituitary an·te·rior·pituitary uncommon noun 1. the anterior lobe of the pituitary body; primarily glandular in nature Synonymsanterior pituitaryanterior pituitary glandadenohypophysis Related words Word family anterior pituitary gland Broader terms endocrine gland Parts pituitary Part of pars distilis WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.