Parallel-motion
noun
1.
a mechanism arranged so as to impart rectilinear motion to a rod connected to a lever that moves through an arc.
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- Parallelogram
[par-uh-lel-uh-gram] /ˌpær əˈlɛl əˌgræm/ noun 1. a quadrilateral having both pairs of opposite sides parallel to each other. /ˌpærəˈlɛləˌɡræm/ noun 1. a quadrilateral whose opposite sides are parallel and equal in length See also rhombus, rectangle, trapezium, trapezoid n. 1560s, from Middle French parallélogramme (1550s) and directly from Late Latin parallelogrammum, from Greek parallelogrammon noun […]
- Parallelogram-law
noun 1. Mathematics, Physics. a rule for adding two vectors, as forces (parallelogram of forces) by placing the point of application of one at the point of origin of the other and obtaining their sum by constructing the line connecting the two remaining end points, the sum being the diagonal of the parallelogram whose adjacent […]
- Parallelogram rule
noun 1. (maths, physics) a rule for finding the resultant of two vectors by constructing a parallelogram with two adjacent sides representing the magnitudes and directions of the vectors, the diagonal through the point of intersection of the vectors representing their resultant