viewshed n. the landscape or topography visible from a geographic point, especially that having aesthetic value. Etymological Note: This term is directly related to watershed ‘an area or ridge of land that separates waters flowing to different rivers, basins, or seas.’ The suffix -shed in both cases means, according to the Oxford English Dictionary, a “distinction, discrimination, separation (of one thing from another.” (source: Double-Tongued Dictionary)
Further reading
We use the term Milky Way for that glowing arc across the sky. But how people picture it varies from culture to culture. In Sweden, that starry band goes by a name that means “Winter Street,” and in Hawaii, a term for the Milky Way...
Imagine telling someone how to get to your home, but without using the name of your street, or any other street within ten miles. Could you do it? We take street names for granted, but these words are useful for far more, like applying for a job or...