What do a.m. and p.m. stand for?


[jem] /dʒɛm/
a cut and polished precious stone or pearl fine enough for use in jewelry.
something likened to or prized as such a stone because of its beauty or worth:
His painting was the gem of the collection.
a person held in great esteem or affection.
muffin (def 1).
British Printing. a 4-point type of a size between brilliant and diamond.
verb (used with object), gemmed, gemming.
to adorn with or as with gems; begem.
Jewelry. noting perfection or very high quality:
gem color; a gem ruby.
Origin of gem
1275-1325; Middle English gemme < Old French < Latin gemma bud, jewel; replacing Middle English yimme, Old English gim(m) < Latin
Related forms
gemless, adjective
gemlike, adjective
2. treasure, prize, jewel, pearl. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for gem


a precious or semiprecious stone used in jewellery as a decoration; jewel
a person or thing held to be a perfect example; treasure
a size of printer's type, approximately equal to 4 point
(NZ) a type of small sweet cake
verb gems, gemming, gemmed
(transitive) to set or ornament with gems
Derived Forms
gemlike, adjective
gemmy, adjective
Word Origin
C14: from Old French gemme, from Latin gemma bud, precious stone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for gem

Old English gimm "precious stone, gem, jewel," also "eye," from Latin gemma "precious stone, jewel," originally "bud," perhaps from the root *gen- "to produce," or from PIE *gembh- "tooth, nail." Of persons, from late 13c. Forms in -i-, -y- were lost early 14c., and the modern form of the word probably representing a Middle English borrowing from Old French gemme (12c.). As a verb, from c.1600, "to adorn with gems;" mid-12c. as "to bud."

Online Etymology Dictionary, © 2010 Douglas Harper
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gem in Technology
operating system
One of the first commercially available GUIs. Borrowing heavily from the Macintosh WIMP-style interface it was available for both the IBM compatible market (being packaged with Amstrad's original PC series) and more successfully for the Atari ST range. The PC version was produced by Digital Research (more famous for DR-DOS, their MS-DOS clone), and was not developed very far. The Atari version, however, continued to be developed until the early 1990s and the later versions supported 24-bit colour modes, full colour icons and a nice looking sculpted 3D interface.
The Free On-line Dictionary of Computing, © Denis Howe 2010
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Related Abbreviations for gem


  1. Gemini
  2. ground-effect machine
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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