Ob*lon"gum\, n.; pl. Oblonga. [NL. See Oblong.] (Geom.) 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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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