Webster
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Webster’s Revised Unabridged Dictionary · 1913

Elongation

E′lon·ga′tion, n. [LL. elongatio: cf. F. élongation.] 1. The act of lengthening, or the state of being lengthened; protraction; extension. "Elongation of the fibers." Arbuthnot.

2. That which lengthens out; continuation.

May not the mountains of Westmoreland and Cumberland be considered as elongations of these two chains? Pinkerton.

3. Removal to a distance; withdrawal; a being at a distance; distance.

The distant points in the celestial expanse appear to the eye in so small a degree of elongation from one another, as bears no proportion to what is real. Glanvill.

4. (Astron.) The angular distance of a planet from the sun; as, the elongation of Venus or Mercury.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty.