diplanaradj.
/dʌɪˈpleɪnə/ Mathematics.
Of or pertaining to two planes.
ΚΠ
a1865 W. R. Hamilton Elem. Quaternions (1866) 113 Any two quaternions (or quotients), which have different planes (intersecting therefore in a right line through the origin), may be said, by contrast, to be Diplanar.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).
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adj.a1865