Online Encyclopedia

ELBOW

Online Encyclopedia
Originally appearing in Volume V09, Page 164 of the 1911 Encyclopedia Britannica.
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ELBOW, in anatomy, the articulation of the humerus, the bone of the upper arm, and the ulna and radius, the bones of the fore-arm (see JOINTS). The word is thus applied' to things which are like this joint in shape, such as a sharp bend of a stream or river, an angle in a tube, &c. The word is derived from the O. Eng. elnboga, a combination of eln, the forearm, and boga, a bow or bend. This combination is common to many Teutonic languages, cf. Ger. Ellbogen. Eln still survives in the name of a linear measure, the " ell," and is derived from the O. Tent. alma, cognate with Lat. ulna and Gr. 1.M v 1, the forearm. The use of the arm as a measure of length is illustrated by the uses of ulna, in Latin, cubit, and fathom.
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