adv. [f. prec. + -LY.] In a concentric manner; ‘in a manner directing to, or exhibiting, one common centre’ (T.).

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1712.  Clarke, 3rd & 4th Defence, 13. Pieces of Surfaces spherically and concentrically convex.

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1766.  Pennant, Zool., Spoon-hinge Shell (R.). Shell oblong … obsoletely striated concentrically.

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1872.  Huxley, Phys., vii. 161. Arranged in circles, concentrically with the aperture.

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1876.  trans. Ziemssen’s Cycl. Med., VI. 211. We find the left ventricle concentrically hypertrophied.

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