Oblongum
Pronunciation : Ob*lon"gum
Part of Speech : n.;
Etymology : [NL. See Oblong.] (Geom.)
Definition : Defn: 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.
pl. Oblonga.
Source : Webster's Unabridged Dictionary, 1913