a. [f. SPHEROID sb. + -ICAL.]

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  1.  = SPHEROIDAL a. 2.

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1698.  Phil. Trans., XXXIII. 254. Because … I have already shew’d that the Surface of the Ocean is spheroidical and not spherical.

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1713.  Derham, Phys.-Theol., VIII. vi. (1752), 378. Its leaves expanded, minister to the germination of globular, and other spheroidical balls.

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1787.  Gentl. Mag., Nov., 993/1. The barrows … are … in general nearly spheroidical.

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1823.  De Quincey, Lett. Lang. (1860), 128. Any whatever of the larger spheroidical fruits.

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1831.  H. Lloyd, Light & Vision, III. i. 265. The bounding surfaces of the refracting media, however, are not spherical,… but spheroidical.

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  2.  = SPHEROIDAL a. 1.

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1708.  J. Keill, Anim. Secretion, 163. The Globule would be pressed into a Spheroidical Form.

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1710.  Brit. Apollo, III. No. 118. 1/2. The Spheroidical Figure of the Earth.

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1845.  Herschel, Ess. (1857), 666. The change of spheroidical form.

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  Hence Spheroidically adv., spheroidally.

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1786.  T. Jefferson, Writ. (1859), II. 69. We may, therefore, conclude it impossible for the poles of the earth to shift, if it was made spheroidically.

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