adv. [f. prec. + -LY2.] In an expansive manner; at large, extensively. With respect to the steam-engine: On the principle of expansion.

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1839.  R. S. Robinson, Naut. Steam Eng., 160. Very little power is lost by working the steam expansively.

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1865.  Carlyle, Fredk. Gt., XI. iii. Voltaire, at his leisure in Brussels … writes much more expansively.

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1865.  Masson, Rec. Brit. Philos., 100. The Absolute going forth expansively … is Nature.

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1875.  R. F. Martin, trans. Havrez’s Winding Mach., 93. For throttling of the steam through the regulator will be substituted working expansively.

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