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The portion of the sternum or of the malleus that represents the handle of a sword or hammer. [L. handle]

- m. mallei SYN: m. of malleus.

- 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. sterni [TA] SYN: m. of sternum.

- 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: as

a) 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 clavicles

b) 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.