- The portion of the sternum or of the malleus that represents the handle of a sword or hammer. [L. handle]- m. of malleus the handle of the malleus; the portion that extends downward, inward, and backward from the neck of the malleus; it is embedded throughout its length in the tympanic membrane. SYN: m. mallei.- m. of sternum [TA] the upper segment of the sternum, a flattened, roughly triangular bone, occasionally fused with the body of the sternum, forming with it a slight angle, the sternal angle. SYN: m. sterni [TA], episternum, presternum.
* * *ma·nu·bri·um mə-'n(y)ü-brē-əm n, pl -bria -brē-ə also -bri·ums an anatomical process or part shaped like a handle: asa) the uppermost segment of the sternum of humans and many other mammals that is a somewhat triangular flattened bone with anterolateral borders which articulate with the claviclesb) the process of the malleus of the ear
* * *n. (pl. manubria)1. the upper section of the breastbone (see sternum). It articulates with the clavicles and the first costal cartilage; the second costal cartilage articulates at the junction between the manubrium and body of the sternum.2. the handle-like part of the malleus (an ear ossicle), attached to the eardrum.• manubrial adj.
* * *ma·nu·bri·um (mə-nooґbre-əm) pl. manuґbria [L.] 1. a handlelike structure or part. m. sterni.
Medical dictionary. 2011.