What is spiral. Helispherical line (Math.). the rhomb line in navigation. [R.] called?
helispherical — Spiral. Helispherical line (Math.). the rhomb line in navigation. [R.]. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00