Pronephros
Pronunciation : Pro*neph"ros, Pro*neph"ron (
Part of Speech : n.
Etymology : [ NL., fr. Gr. (Anat.)
Definition : Defn: The head kidney. See under Head.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder