latus rectum

[ley-tuhs rek-tuhm]

la·tus rec·tum

[ley-tuhs rek-tuhm]
noun, plural la·ter·a rec·ta [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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Latus rectum is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Collins
World English Dictionary
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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