Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia.
the depression in the primitive node that serves to connect the notochordal canal with the surface ectoderm.
Farlex Partner Medical Dictionary © Farlex 2012
A minute depression at the anterior end of the primitive groove or streak and immediately posterior to the primitive knot.
See also: pit
Medical Dictionary, © 2009 Farlex and Partners