Section M, N, and O

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"Section M, N, and O"

[Optic + -
gram: cf. F. optogramme.] (Physiol.) An image
of external objects fixed on the retina by the photochemical action
of light on the visual purple. See Optography.

Op*tog"ra*phy (?), n. [Optic +
-graphy.] (Physiol.) The production of an optogram
on the retina by the photochemical action of light on the visual
purple; the fixation of an image in the eye. The object so
photographed shows white on a purple or red background. See Visual
purple, under Visual.

Op*tom"e*ter (?), n. [Optic +
-meter.] (Physiol.) An instrument for measuring
the distance of distinct vision, mainly for the selection of
eveglasses.

Op"u*lence (?), n. [L.
opulentia: cf. F. opulence. See Opulent.]
Wealth; riches; affluence. Swift

Op"u*len*cy (?), n. See
Opulence. Shak.

Op"u*lent (?), a. [L. opulens,
opulentus, fr. ops, opis, power, wealth, riches,
perh.

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"Section M, N, and O"