occult line
English
Noun
occult line (plural occult lines)
- A line drawn as a part of the construction of a geometrical figure or problem, but not to appear in the finished plan.
- 1854, William Henry Smyth, The Mediterranean: A Memoir Physical, Historical, and Nautical, pp. 136-37 (Google preview):
- Yet in making an occult line on my chart, to indicate this rise from a depth at present beyond estimate, I by no means meant it as a mark for shoal water in which navigation is concerned.
- 1854, William Henry Smyth, The Mediterranean: A Memoir Physical, Historical, and Nautical, pp. 136-37 (Google preview):
References
- occult line at OneLook Dictionary Search
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