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The aurora borealis or aurora australis (northern or southern lights). Aurora borealis (, i. e., northern daybreak; popularly called northern lights. A luminous meteoric phenomenon, visible only at night, and supposed to be of electrical origin. This species of light usually appears in streams, ascending toward the zen…

Belonging to, or resembling, the aurora (the dawn or the northern lights); rosy. Her cheeks suffused with an auroral blush. Longfellow.

A peculiar phase of the aurora borealis, formed by the concentration or convergence of luminous beams around the point in the heavens indicated by the direction of the dipping needle.

lights when they rise and fall alternately without any considerable change of length. See Aurora borealis, under Aurora.

Aurora, the goddess of morn.

prognosticate; to foretell. Your looks foreshow You have a gentle heart. Shak. Next, like Aurora, Spenser rose, Whose purple blush the day foreshows. Denham.

ine connecting places on the earth's surface at which there is the same mean frequency of auroras.

Indicating equal auroral display; as, an isochasmic line.

The goddess Aurora. [Poetic] Shak.

he north; as, a northern wind. Northern diver. (Zoöl.) See Loon. -- Northern lights. See Aurora borealis, under Aurora. -- Northern spy (Bot.), an excellent American apple, of a yellowish color, marked with red.

The act of recognizing and noting some fact or occurrence in nature, as an aurora, a corona, or the structure of an animal.

It is probably a variety of the common European hare (L. timidus). -- Polar lights, the aurora borealis or australis. -- Polar, or Polaric, opposition or contrast (Logic), an opposition or contrast made by the existence of two opposite conceptions which are the extremes in a species, as white and black in colors; he…

or column of light shooting upward from the horizon, constituting one of the forms of the aurora borealis. Macaulay. While overhead the North's dumb streamers shoot. Lowell.