aParachordal(Anat) Situated on either side of the notochord; -- applied especially to the cartilaginous rudiments of the skull on each side of the anterior part of the notochord.
Century Dictionary and Cyclopedia
parachordalIn embryology,lying alongside of the cephalo-chord or cranial part of the notochord: specifically noting the primitive undifferentiated plate of cartilage cartilaginous basis cranii, lying on each side and in front of the notochord of the early embryo, and laying the foundation of the skull. See cut under chondrocranium.
nparachordalThe parachordal plate or cartilage.
Chambers's Twentieth Century Dictionary
adjParachordalpar-a-kōr′dal (biol.) lying alongside the cranial part of the notochord.