umbra versa
noun/ˈʌmbɹə ˈvɜːsə/UK
Etymology
First attested in Modern English in 1688, although the phrase was also used in Middle English by Geoffrey Chaucer (c. 1343–1400) in his Treatise on the Astrolabe; Latin: umbra (“shadow”) + versa (feminine nominative singular of versus, “turned”) = “turned shadow”; compare umbra recta.
Definitions
On a shadow in the shape of a right triangle, the length of the shadow's edge opposite to…
On a shadow in the shape of a right triangle, the length of the shadow's edge opposite to a measured angle.
- Scheubelius a great Mathematician, but by book only, and not by practice who being required ſometime in an Army to make uſe of his Quadrant, knew not the difference between umbra recta, and umbra verſa.
The neighborhood
Vish — recursive loop
No curated loop yet for umbra versa. Loops are being traced one word at a time while the ingestion pipeline matures.
sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA