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Botryoidal :: Botryoidal (a.) Having the form of a bunch of grapes; like a cluster of grapes, as a mineral presenting an aggregation of small spherical or spheroidal prominences..

Quadric :: Quadric (n.) A surface whose equation in three variables is of the second degree. Spheres, spheroids, ellipsoids, paraboloids, hyperboloids, also cones and cylinders with circular bases, are quadrics..

Spherosiderite :: Spherosiderite (n.) Siderite occuring in spheroidal masses.

Spheroidal :: Spheroidal (a.) Having the form of a spheroid.

Oblongum :: Oblongum (n.) A prolate spheroid; a figure described by the revolution of an ellipse about its greater axis. Cf. Oblatum, and see Ellipsoid of revolution, under Ellipsoid..

Hemispheroid :: Hemispheroid (n.) A half of a spheroid.

Semispheroidal :: Semispheroidal (a.) Formed like a half spheroid.

Spheroidical :: Spheroidical (a.) See Spheroidal.

Oblatum :: Oblatum (n.) An oblate spheroid; a figure described by the revolution of an ellipse about its minor axis. Cf. Oblongum.

Hemispheroidal :: Hemispheroidal (a.) Resembling, or approximating to, a hemisphere in form..

Spheroid :: Spheroid (n.) A body or figure approaching to a sphere, but not perfectly spherical; esp., a solid generated by the revolution of an ellipse about one of its axes..

Nucleus :: Nucleus (n.) A body, usually spheroidal, in a cell or a protozoan, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division..

Oblate :: Oblate (a.) Flattened or depressed at the poles; as, the earth is an oblate spheroid..

Spheroidic :: Spheroidic (a.) Alt. of Spheroidica.

Spheroidity :: Spheroidity (n.) The quality or state of being spheroidal.

Bombolo :: Bombolo (n.) A thin spheroidal glass retort or flask, used in the sublimation of camphor..

Dumb-bell :: Dumb-bell (n.) A weight, consisting of two spheres or spheroids, connected by a short bar for a handle; used (often in pairs) for gymnastic exercise..

Ellipticity :: Ellipticity (n.) Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided by the equatorial; thus, the ellipticity of the earth is /..

Echinoidea :: Echinoidea (n. pl.) The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid..

Spheroidicity :: Spheroidicity (n.) Alt. of Spheroidit.

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