areæ

One of the Hexagon Areæ of a Frog’s Lungs, which were not ſo much diſtended by Inflation, as thoſe parts of the Lungs repreſented in the two former Figures 3 and 4, whereby the little Areæ or Cells in the Interſtices of the extremities of the Veins and Arteries appear cloſer and leſs than in the two foregoing Figures, tho viewed by the ſame Microſcope.

1704, Philoſophical tranſactions, Giving ſome Account of the Preſent Undertakings, Studies and Labours of the Ingenious, In many Conſiderable Parts of the World, volume XXIII, page 1,392

Muſcular motion is ſuppoſed to depend on this ſerpentine effect, on the muſcular fibres ; for as theſe fibres, or ſmall arteries, are connected to each other by reticular ſubſtance laterally ; and as their areæ are increaſed both in length and diameter, they muſt be neceſſarily ſhortened by diſtenſion.

1796, The Critical Review, or, Annals of Literature, volume XVIII, page 278

In certain parts of the sea bottom in the immediate vicinity of the British Islands, as in the Clyde district, among the Hebrides, in the Moray Firth, and in the German Ocean, there are depressed areæ, forming a kind of submarine valleys, the centres of which are from 80 to 100 fathoms, or more, deep.

1907 C.E., Henrietta Anne Heathorn Huxley, Aphorisms and Reflections, CXCIX [C. E. viii 53]