Cf. EXCITER. [f. EXCITE v., on the analogy of motor.] a. = EXCITER. b. An afferent nerve belonging to the spinal division of the nervous system. Also attrib. or as adj.

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1816.  Jane Austen, Mansfield Park, II. 126. All those fine feelings of which he had hoped to be the excitor, were already given.

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1836.  M. Hall, Lect. Nervous Syst., 15. The true Spinal Nerves. I. The Excitors. Ibid., 21. The incident excitor nerves, the medulla, and the reflex motor nerves, constitute the system.

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1865.  Cornh. Mag., XI. 592. It is quite credible that the messenger of death operated through … the usual excitors of disease.

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1871.  Napheys, Prev. & Cure Dis., III. iii. 674. Another excitor is a brush of fine wires.

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1874.  Carpenter, Ment. Phys., I. ii. § 62 (1879), 63. Other excitor fibres … are included in the ordinary nerve-trunks.

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