ROOT

n. Run. A.-S., rot. Gr.. pi'a. Lat., radix. Fr., mine. Ger., Wurzel. 1. The descending axis of a plant; that part BMUfMM^f 111 11V/1/ IM , lu ll KXVWMm JJ^JIIJL III 111^ SllUclWrtl just behind instead of at the apex, and in the presence of absorbing fibres. [B, 34. 291 (a, 35).] 2. Any structure or part of a structure resembling or analogous to the r. of a plant, [a, 48.] 3. The chief or ultimate cause or source of anything. Adventitious r. A r. originating from some part of the stem or branches, either above or below the ground. [B, 291 (a. 35).] Aerial r. Lat., radix aerea. Fr., racine aerienne. Ger., Luftmtrzel. An adventitious r. produced from some part of a plant above ground. [B, 123 (a, 35).] Anterior r. of the auditory nerve. Ger., vordere Acusticusinurzel. The anterior of the two r's which unite to form the auditory nerve near the restiform body. It arises from the large-celled luditory nucleus. [L. 142. 332.] Anterior r. of the zygoma. A broad ridge which pa es backward from the base of the temporal portion of the zygoma upon the squamous portion of the temporal bone. [L, 142. 332.] Antero-lateral r. of the optic traet. That band of the tract that arises from the optic thalamus and pa es through the inner geniculate body. [a. 34.] Ascending r. of the auditory nerve. A band of fibres described by Roller as ascending from the medulla in the middle line to join the r's of the auditory nerve as they emerge from the medulla. [B.] Ascending r. of the fifth nerve. Fr., grande racine ascend ante. A bundle of fibres which arises from a group of nerve-cells in the gelatinous substance of the medulla oblong at a and joins the sensory r. of the Ifth nerve. [I, 31 (K).] Axial r. Fr., racine axile. See Tap-r. E, he; E, ell; G, go; I, die; I2, in; N, in; N, tank; [s. 412]