a. [f. L. ēmiss- ppl. stem of ēmittĕ-re to send forth, EMIT + -IVE.]

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  1.  Having power to emit; radiating.

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1870.  T. L. Phipson, trans. Guillemin’s Sun, 236. A homogeneous gaseous mass … having a radiating or emissive power.

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1881.  Prof. Stokes, in Nature, No. 625. 596. The … body of the sun … is comparatively feebly emissive of light.

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  b.  Emissive theory: = Emission theory.

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1837.  Whewell, Hist. Induct. Sc. (1857), I. 63. The emissive, and the undulatory theory of light.

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1842.  W. Grove, Corr. Phys. Forces (1850), 64. The emissive or corpuscular theory.

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  † 2.  That is emitted; that is sent or flows forth. Obs. rare.

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16[?].  R. Loveday, Letters (1663), 201. Thus their emissive venome … will fatally recoyl upon themselves.

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1746–7.  Hervey, Medit. (1818), 126. Freely … she distributes the bounty of her emissive sweets.

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1738.  H. Brooke, Tasso, I. 17 (R.).

        But soon a Beam, emissive from above,
Shed mental Day, and touch’d the Heart with Love.

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