† helicosophyn.
Obsolete.
That part of geometry which treats of spirals.
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planimetrya1393
conic?a1560
helicosophy1570
stereometry1570
spheric1660
planometry1669
mensuration1704
polygonometry1791
analytical geometry1802
isoperimetry1811
analytic geometry1817
algebraic geometry1821
coordinate geometry1837
non-Euclidean geometry1872
differential geometry1877
pangeometry1878
projective geometry1878
metageometry1890
Riemann geometry1895
variable geometry1957
1570 J. Dee in H. Billingsley tr. Euclid Elements Geom. Math. Præf. sig. ciiij v Helicosophie, is nere Sister to Trochilike.
1696 E. Phillips New World of Words (new ed.) Helicosophy, a mathematical Art which demonstrates the designing of all spiral Lines.
This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2021).
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