SPHEROGRAPH
\sfˈɛɹəɡɹˌaf], \sfˈɛɹəɡɹˌaf], \s_f_ˈɛ_ɹ_ə_ɡ_ɹ_ˌa_f]\
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An instr. designed for the practical application of spherics to navigation.
By Stormonth, James, Phelp, P. H.
Word of the day
Aerocurve
- A modification of the aeroplane, having curved surfaces, advantages which were first demonstrated by Lilienthal.