Law of gravitation, that law in accordance with which gravitation acts, namely, that every two bodies
or portions of matter in the universe attract each other with a force proportional directly to the quantity of
matter they contain, and inversely to the squares of their distances.
(Grav`i*tation*al) a. (Physics) Of or pertaining to the force of gravity; as, gravitational
(Gravi*ta*tive) a. Causing to gravitate; tending to a center. Coleridge.
(Grav"i*ty) n.; pl. Gravities [L. gravitas, fr. gravis heavy; cf. F. gravité. See Grave, a., Grief.]
1. The state of having weight; beaviness; as, the gravity of lead.
2. Sobriety of character or demeanor. "Men of gravity and learning." Shak.
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3. Importance, significance, dignity, etc; hence, seriousness; enormity; as, the gravity of an offense.
They derive an importance from . . . the gravity of the place where they were uttered.Burke.
4. (Physics) The tendency of a mass of matter toward a center of attraction; esp., the tendency of a
body toward the center of the earth; terrestrial gravitation.
5. (Mus.) Lowness of tone; opposed to acuteness.
Center of gravity See under Center. Gravity battery, See Battery, n., 4. Specific gravity,
the ratio of the weight of a body to the weight of an equal volume of some other body taken as the standard
or unit. This standard is usually water for solids and liquids, and air for gases. Thus, 19, the specific
gravity of gold, expresses the fact that, bulk for bulk, gold is nineteen times as heavy as water.
(Gra"vy) n.; pl. Gravies [OE. greavie; prob. fr. greaves, graves, the sediment of melted tallow.
1. The juice or other liquid matter that drips from flesh in cooking, made into a dressing for the food
when served up.
2. Liquid dressing for meat, fish, vegetables, etc.
(Gray) a. [Compar. Grayer ; superl. Grayest.] [OE. gray, grey, AS. gr&aemacrg, greg; akin to
D. graauw, OHG. grao, G. grau, Dan. graa, Sw. grå, Icel. grar.] [Written also grey.]
1. White mixed with black, as the color of pepper and salt, or of ashes, or of hair whitened by age; sometimes,
a dark mixed color; as, the soft gray eye of a dove.
These gray and dun colors may be also produced by mixing whites and blacks.Sir I. Newton.
2. Gray-haired; gray-headed; of a gray color; hoary.
3. Old; mature; as, gray experience. Ames.
Gray antimony (Min.), stibnite. Gray buck (Zoöl.), the chickara. Gray cobalt (Min.), smaltite.
Gray copper (Min.), tetrahedrite. Gray duck (Zoöl.), the gadwall; also applied to the female
mallard. Gray falcon (Zoöl.) the peregrine falcon. Gray Friar. See Franciscan, and Friar.
Gray hen (Zoöl.), the female of the blackcock or black grouse. See Heath grouse. Gray mill or
millet (Bot.), a name of several plants of the genus Lithospermum; gromwell. Gray mullet (Zoöl.)
any one of the numerous species of the genus Mugil, or family Mugilidæ, found both in the Old World
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