Also found in: Medical.


a.1.(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.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Since the thoracic duct is preceded by the emergence of parachordal lymphatic vessels (PC) that start to sprout from the embryonic posterior cardinal vein (PCV) at around 32 hours postfertilization (hpf) [37, 38], we investigated the influence of a tmsb-like KD on the pattern of PC-formation at 60 hpf by in vivo confocal imaging of Tg[(fli1-egfp).sup.y1] zebrafish.
(e) Knockdown of tmsb-like leads to the aberrant formation of intersegmental vessels (ISV) displaying an ineffective hypersprouting phenotype (arrowheads) and a perturbation of parachordal lymphatic vessel generation by parachordal lymphangioblasts (PL) 60 hpf.