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, institutions, or cultural and economic characteristics; a field investigation into human ecology.
- Area vasculosa
that part of the area opaca in which the blood cells and vessels are formed. Historical Examples Outside the area pellucida, an area vasculosa has become very well defined. The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour Their development is completed on the second day; and the region through which […]
- Area vitellina
the nonvascular part of the area opaca surrounding the area vasculosa.
any particular extent of space or surface; part: the dark areas in the painting; the dusty area of the room. a geographical region; tract: the Chicago area; the unsettled areas along the frontier. any section reserved for a specific function: the business area of a town; the dining area of a house. extent, range, or […]
- Areal velocity
a measure of the velocity of one celestial body in orbit about another, equal to the area swept out per unit time by the vector joining the two bodies.