Webster
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Webster’s Revised Unabridged Dictionary · 1913

Hemisphere

Hem′i·sphere, n. [L. hemisphaerium, Gr. ἡμισφαίριον; ἡμι- half = σφαῖρα sphere: cf. F. hémisphère. See Hemi-, and Sphere.] 1. A half sphere; one half of a sphere or globe, when divided by a plane passing through its center.

2. Half of the terrestrial globe, or a projection of the same in a map or picture.

3. The people who inhabit a hemisphere.

He died . . . mourned by a hemisphere. J. P. Peters.

Cerebral hemispheres. (Anat.) See Brain. — Magdeburg hemispheres (Physics), two hemispherical cups forming, when placed together, a cavity from which the air can be withdrawn by an air pump; — used to illustrate the pressure of the air. So called because invented by Otto von Guericke at Magdeburg.

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. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.