a. [f. prec. + -IC.]

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  1.  Theol. Of or pertaining to synergism or the synergists.

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1818.  Todd.

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1839.  Hallam, Lit. Eur., III. ii. § 32. Melanchthon espoused the synergistic doctrine.

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1864.  Shedd, Hist. Chr. Doctrine, II. IV. ii. 40. Chrysostom’s theory of regeneration was firmly synergistic.

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  2.  Med. and Physiol. Of a medicine, etc.: Co-operating with another; acting as a synergist.

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1876.  Bartholow, Mat. Med. (1888), 156. Synergists. All agents promoting constructive metamorphosis are synergistic to iron.

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  So Synergistical a. (= sense 1); hence Synergistically adv. (cf. sense 2).

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1657.  Gaule, Sap. Just., 5. The Synergistical and the Anabaptistical way of understanding it.

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1764.  Maclaine, trans. Mosheim’s Eccl. Hist., Cent. XVI. III. II. i. § 30 (1833), 488/1. The synergistical controversy.

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1772.  Tucker, Apol. Ch. Eng. (ed. 2), 60, note. The Saxon Divines, with Melancthon at their Head,… adopted another System, viz. The Synergistical.

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1876.  Bartholow, Mat. Med. (1879), 502. Combination with agents acting synergistically, as oil or cubebs and sandal-wood.

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