prime vertical
Britishnoun
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The amplitude of a star is its distance from the prime vertical, measured on the horizon, north or south.
From Astronomical Lore in Chaucer by Grimm, Florence M.
Sun Sight In order to make this a valuable sight for longitude it should be taken when the sun is on or as near as possible to the prime vertical.
From Lectures in Navigation by Draper, Ernest Gallaudet
The transit instrument is also used in the prime vertical for the determination of latitudes.
From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various
Take the morning sight for longitude when the sun is on or as near as possible to the prime vertical.
From Lectures in Navigation by Draper, Ernest Gallaudet
The usual observations made by navigators at sea consist in a meridian observation of the sun for latitude, and a morning and possibly afternoon observation of the sun near the prime vertical for longitude.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
