cycliden.
/ˈsʌɪklɪd//ˈsɪklʌɪd/ Geometry.
‘The envelope of a sphere whose centre moves on a fixed quadric, and which cuts a fixed sphere orthogonally’ (Salmon).
ΚΠ
1874 G. Salmon Treat. Analytic Geom. Three Dimensions (ed. 3) 496.
1881 H. Hart in Athenæum 23 Apr. 563/2 On the Five Focal Quadrics of a Cyclide.
This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2018).
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n.1874