latus rectum

latus rectum

[ley-tuhs rek-tuhm]
noun, plural latera recta [ley-ter-uh rek-tuh] . Geometry.
the chord perpendicular to the principal axis and passing through a focus of an ellipse, parabola, or hyperbola.

Origin:
1695–1705; < Neo-Latin: literally, straight side

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latus rectum (ˈlɑːtəs ˈrɛktəm)
 
n , pl latera recta
geometry a chord that passes through the focus of a conic and is perpendicular to the major axis
 
[C18: New Latin: straight side]

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