d.thyroid foramen, thyroid membrane: names for the obturator foramen and membrane of the hip-bone (see obturatorn. 1), from their shield-like shape.
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the world > life > the body > structural parts > bone or bones > bony support for limbs > pelvis > [noun] > hip bone > innominate bone > obturator foramen
stopper1683
obturator foramen1824
thyroid foramen1890
1890 J. S. BillingsNational Med. Dict. IIT[hyroid] foramen, obturator foramen.