(Anatomy)a small circular area, in particular the ring of pigmented skin surrounding a nipple (剖)乳晕;小范围的圆形部位 ■(Biology)any of the small spaces between lines or cracks on a leaf or an insect's wing (生)(叶子或昆虫翅膀上的)网隙 ■(Medicine)a reddened patch around a spot or papule (医)(脓包或丘疹周围的)红斑
派生 areolar adjective areolate adjective 语源
mid 17th cent. (in the sense 'small space or interstice'): from Latin, literally small open space', diminutive of area (see area)