a. Now rare or Obs. [Formed as prec. + -ICAL.]

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  1.  = SYNCHRONOUS 1. Const. with, † to.

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1652.  Charleton, Darkn. Atheism, iv. 149. In the year Æræ Christi nati 33. (which is synchronical to the 78. of the Julian account).

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1677.  Cary, Palæol. Chron., II. II. III. v. 231. Their Beginning and Continuance Synchronical with the Kings of Judah and Israel.

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1826.  E. Irving, Babylon, I. III. 179. Which are not successive, but contemporaneous or synchronical.

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1838.  G. S. Faber, Inquiry, 290. On the strength of evidence, synchronical with the particulars detailed.

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1855.  Motley, Dutch Rep., VI. ii. (1866), 801/2. To cast a glance at certain synchronical events in different parts of the Netherlands.

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1865.  McLauchlan, Early Scott. Ch., xix. 251. In the MS. containing the synchronical kings of Ireland and Scotland.

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  b.  = SYNCHRONOUS 1 b.

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1843.  Florist’s Jrnl. (1846), IV. 252. The attempted synchronical arrangement of the calendar of operations.

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1867.  J. Burdon Sanderson, in Phil. Trans., CLVII. 576. When … great variations of arterial pressure take place…, it is necessary … to adopt some method of marking synchronical points in the two tracings.

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1878.  H. G. Guinness, End of Age (1880), 140. Rev. xvii, a prophecy which by its synchronical connection with almost all the other predictions … furnishes a most valuable clue.

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  2.  = SYNCHRONOUS 2.

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1660.  Boyle, New Exp. Phys. Mech., Digress. 350. The Systole and Diastole of the Heart and Lungs, being very far from Synchronical.

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1664.  Power, Exp. Philos., I. 60. The whole Heart with both Auricles and both Ventricles, the one manifestly preceding the pulse of the other (which two motions the bare eye judges to be Synchronical).

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  Hence Synchronically adv. = SYNCHRONOUSLY.

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1749.  Hartley, Observ. Man, I. i. § 2. 67. Two Vibrations, associated synchronically.

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1818.  G. S. Faber, Horæ Mosaicæ, I. 305. The question … whether they were … written synchronically with the exodus.

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1843.  Civil Eng. & Arch. Jrnl., VI. 159/1. The simplicity of Greek architecture … is the element which … forbids its reproduction synchronically.

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