APSIS
\ˈapsɪs], \ˈapsɪs], \ˈa_p_s_ɪ_s]\
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In a curve referred to polar coordinates, any point for which the radius vector is a maximum or minimum.
By Oddity Software
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In a curve referred to polar coordinates, any point for which the radius vector is a maximum or minimum.
By Noah Webster.
Word of the day
Mustagh Range
- a mountain range in northern Kashmir; an extension of the Hindu Kush; contains 2nd highest peak