perturbation, perturb a cion, perturbacyon

[Fr. perturbation, from Lat. pertur bationem, acc. of perturbatio =a disturbing, from perturb at us, pa. par. of per turbo =to perturb (q.v.); Sp. perturb a cion; Ital. perturb azione.] IMG:content-0939.png:[blocks in formation] 3. A cause of disquiet or agitation. "That wretched Anne, thy wife Now fills thy sleep with perturbations." Shakesp.: Richard III., v. 3. II. Astron.: Any disturbance or irregularity in the movement of a planet in its orbit. Every heavenly body, by the law of gravitation, po e es an attractive power over every other one. When, therefore, the orbits of any two approach, each causes a perturbation in the movement of the other. [NEPTUNE.] †per-tür-bā-tion-al, a. [Eng. perturbation ; -al.] Of or pertaining to the perturbation of the planets. "That very delicate and obscure part of the perturb a tional theory."- Herschel : Astronomy (ed. 1850), p. vii. per-tür-bā-tive, a . [Eng. perturb at (e); -ive.] Tending to disturb, or make irregular; disturbing. "The perturbative action on Uranus." - Herschel: Astron . (ed. 1850), p. viii. †per-tür-bā-tõr, s . perturbe *per-turbe, v. t . (PERTURB.] per-türbed, pa. par. or a. [PERTURB.) per-türb-ěd-lý, adv. English perturbed; ly.] Restle ly; in an agitated or perturbed manner. për-türb-er, s. [Eng. perturb; -er.] The same me as PERTURBATOR (q. v.). "The periurber of him and his whole real me." -Hall : Henry VII . (an. 13.)