areolation

英[æ,riәu'leiʃәn]

[植]网隙形成, 形成网眼状空隙(结构)

n. Division into areolae.\nn. Any small space, bounded by some part different in\n color or structure, as the spaces bounded by the nervures of the wings\n of insects, or those by the veins of leaves; an areola.