AREOLA

(Lat.), n. f., dim. of area (q. v.). A®r(a3r)-e(ayo-la’, Gr., édovia. Fr., aréole.’ Ger., Hof. It., areola. Sp., aréola. Syn.: halo. 1. À zone of hyperemia or pigmentation (e, g., the circular blush surrounding a vaccinal lesion, the pigmented disc surrounding the nipple). [G.] 2. A space between adjacent constituents of organs or ti ues, especially between the bundles and laminz of areolar ti ue (q. v under Ti ve). [J.] 3. In botany, a cell-like pit or depre ion; an interspace in the cellular ti ue of the leaves of mo es; one of the flat polygonal areas of which the crustacean thallus of some lichens is formed, [B, 198.] 4. The term was also applied by R. Brown to the cell nucleus. [J.] 5. In zoolozy, & scaly plate of a chelonian’s shell. [L, 41.] 6. In entomology, the space between two adjacent nervures of the wing. [L, 49.]— À. apleilaris, A. basilar is. Fr., aréole apicilaire, aréole basilaire. Names given by Ca ini to the upper and lower extremities respectlvelg in the rudimentary pericarp of the ovary in the Com site. [B, 1.]—A. embryonal is. Ger., Keimhof. 1. See Emieee AREA: 2 In botany, Richard’s term for the depre ed a. fe the exterior of the caryopsis indicating the site of the embryo. [B, 198.]—A. in flamm at or i a. See Inflammatory a.—A. mam me. À. of the breast.—A. of Chan ier. An a. (1st def.) surrounding a mallgnant pustule. [A, 452.]—A. of the breast, A. of the nipple. Lat., a. mammæ (seu papille). Fr., aréole (ou auréole) de la mamelle,(ou du mamelon). Ger., Warzenhof, Brustwarzenhof. It., a. del capezzolo. A circular area, usually from an inch to an inch and a half in diameter, surrounding the nipple; of a pink color (varying somewhat with the complexion) in healthy women who are not pregnant; provided with from ten to twenty visible sebaceous follicles. During pregnancy, and sometimes in conpeauance of uterine disease, it becomes darker in color, occasionally almost black, and somewhat raised above the purrcund ine skin, and the follicles are enlarged and moisten its surface wit their secretion. [A, 22.] Cf. Secondary a.—A. ovarifera. Fr., aréole ovarifére. Ca ini's name for one of the small depre ions upon the clinanthium in the Composite corresponding to the areolæ basil a res of the ovaries. [B, 1.1—A. papillæ, A. papillar is. See ‘A. of the breast.—A. umbilical is. A dark disc of pigmentation occasionally formed around the navel during pregnancy, from which a brown streak, about # inch wide, runs down toward the pubes. [A, 126.]—Inflammatory a. Lat., a. in flamm at or i a. Fr., aréole in flamm a to ire. Ger., entzindlicher Ring, À circle of redne , surrounding an inflamed point. (L, 44.]—Primary areolæ. Syn.: rimary marrow cavities, small medullary spaces. Sharpey’s term or the cell-spaces in the calcified matrix of an o ifying cartilage bone which are still occupied by the cartilage cells, either pinglvaory in groups. [J, 30.|-Secondary a. Fr., aréole second a ire. The spotted peripheral portion of the a. of the breast. or a spotted appearance around it, sometimes formed during the latter part of pregnancy. looking “as if the color had been discharged by a shower of drops.” [Montgomery (A, 22); A, 38.)—Secondary areolæ. Syn.: large medullary spaces. Sharpey’s term for the comparatively large spaces in an o ifying cartilage-bone which result from the absorption of the partitions between the primary areola, the spaces becoming filled at the same time with embryonic marrow. [J,30.]—True a. Fr.,aréole vraie. The central portion of the a. of the breast, containing a great number of sebaceous glands. [A, 38.]—Vaceinal a.., aréole vaccinale. A ee shaped redne of the skin which forms around a vaccinal pock, usually on the eighth or ninth day, and fades from the centre toward the border.