helixoidn.
/ˈhɛlɪksɔɪd/ Geometry.
= helicoid n. 2.
ΚΠ
1876 Catal. Special Loan Coll. Sci. Apparatus S. Kensington Mus. §106 The developable helixoid..is the surface swept out by the right line tangents of the helix.
This entry has not yet been fully updated (first published 1898; most recently modified version published online September 2018).
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n.1876