Mullerian \M["u]l*le"ri*an\, a. (Anat.) Of, pertaining to, or discovered by, Johannes M["u]ller. {M["u]llerian ducts} (Anat.), a pair of embryonic ducts which give rise to the genital passages in the female, but disappear in the male. {M["u]llerian fibers} (Anat.), the sustentacular or connective-tissue fibers which form the framework of the retina.