parallelogram
(noun) a quadrilateral whose opposite sides are both parallel and equal in length
Source: WordNet® 3.1
parallelogram (plural parallelograms)
(geometry) A convex quadrilateral in which each pair of opposite edges are parallel and of equal length.
(Gaelic games, dated) either of two rectangular areas (respectively the large parallelogram and the small parallelogram) abutting the goal line in front of the goal. (Since 1986 officially named the large rectangle and small rectangle, though the older names are still occasionally used.)
• (geometry): quadrilateral, quadrangle, tetragon, polygon
• (geometry): rectangle, rhombus, square, rhomboid
Source: Wiktionary
Par`al*lel"o*gram, n. Etym: [Gr. parallélogramme. See Parallel, and - gram.] (Geom.)
Definition: A right-lined quadrilateral figure, whose opposite sides are parallel, and consequently equal; -- sometimes restricted in popular usage to a rectangle, or quadrilateral figure which is longer than it is broad, and with right angles. Parallelogram of velocities, forces, accelerations, momenta, etc. (Mech.), a parallelogram the diagonal of which represents the resultant of two velocities, forces, accelerations, momenta, etc., both in quantity and direction, when the velocities, forces, accelerations, momenta, etc., are represented in quantity and direction by the two adjacent sides of the parallelogram.
Source: Webster’s Unabridged Dictionary 1913 Edition
26 November 2024
(noun) (music) playing in a different key from the key intended; moving the pitch of a piece of music upwards or downwards
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