Area of cardiac dullness
area of cardiac dullness
area of cardiac dullness n.
a triangular area determined by percussion of the front of the chest that corresponds to the part of the heart not covered by lung tissue.
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- Area of outstanding natural beauty
noun see aonb
- Area opaca
the opaque area of the blastoderm surrounding the area pellucida. historical examples junction between the white-yolk spheres and the hypoblast cells at the p-ssage from the area pellucida to the area opaca. the works of francis maitland balfour, volume iv (of 4) francis maitland balfour towards the end of the first day blood-vessels begin to […]
- Area pellucida
the translucent central area of the blastoderm of birds and reptiles within which the embryo develops. historical examples from the middle of this sickle a process next grows forward into the area pellucida. the works of francis maitland balfour, volume 1 francis maitland balfour they are almost entirely confined to the posterior part of the […]
- Area rug
a rug designed to cover only part of a floor.
- Area study
anthropological or sociological research intended to gather and relate data on various aspects of a geographical region and its inhabitants, as natural resources, history, language, inst-tutions, or cultural and economic characteristics; a field investigation into human ecology.