a. [ Pref. peri- + vitelline. ] (Biol.) Situated around the vitellus, or between the vitellus and zona pellucida of an ovum. [ 1913 Webster ]
a. [ L. vitellus the yolk of an egg. ] (Biol.) Of or pertaining to the yolk of eggs; as, the vitelline membrane, a smooth, transparent membrane surrounding the vitellus. [ 1913 Webster ]