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1. Poorly crystallized diamonds used for industrial cutting and abrasion.
2. A carbonado.

[Probably from Dutch boort, tiny waste diamond pieces produced in the gem cutting process, bort , probably from Old French bourt, bastard, from Late Latin burdus, hinny, probably of Celtic origin; akin to Burdō and Burdōnus, ancient Celtic masculine personal names derived from a word for a donkey or mule, animals admired for their robustness.]

bort′y adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(bɔːt) or




(Elements & Compounds) an inferior grade of diamond used for cutting and drilling or, in powdered form, as an industrial abrasive
[Old English gebrot fragment; related to Old Norse brot piece, Old High German broz bud]
ˈborty adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



low-quality diamond, in granular aggregate or small fragments, valuable only in crushed or powdered form as an abrasive.
[1615–25; appar. metathetic variant of *brot (Old English gebrot fragment)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Byline: Daniel Bortz Special to The Washington Post
"We are pleased that both ISS and Glass Lewis have recommended that shareholders vote for our proposed acquisition of LaSalle," said Jon Bortz, chairman, president and CEO.
Pebblebrook will keep Bortz as its chairman, president and CEO; Raymond D.
Daniel Bortz is a freelance writer based in Washington, D.C
Bortz, chairman, president and chief executive officer of Pebblebrook Hotel Trust.
Bortz presents readers with an in-depth examination of the risks generated by capital flows and their potential impact in limiting the effectiveness of progressive economic policy and regulation on economic inequality on a global scale.
From early hip-hop grooves through to the amazing disco vibes of Fort Knox Five and super deep house of Daniel Bortz, this mix is a modern masterpiece destined for eternal posterity.
Kevin Bortz, for many years EBRD Director for Natural Resources and currently seconded to the Union for the Mediterranean, remembers how it all began: "The EBRD's involvement in BTC originated from the Early Oil Project (EOP) oilfield financing, for which the EBRD and the International Finance Corporation (IFC) provided a syndicated loan during the Russian financial crisis of 1998.
Through this book, Southard has also become a karatibe, enabling her readers to understand the hibakusha's pain and commitment that no one should ever again experience what they did." FRED BORTZ
"The repositioning opportunity at The Tuscan combined with the revitalization of the entire Fisherman's Wharf market makes us excited to add this hotel to our expanding portfolio," said Jon Bortz, chairman and chief executive officer of Pebblebrook Hotel Trust, in a statement.
While author Lauri Bortz is best known for her award-winning plays, she has been creating children's literature for decades.
Goodman's pedigreed training and extensive clinical experience as an interventional cardiologist has given him a unique insight into the need for preventative medical practice which led him to becoming an expert in the role of magnesium in supporting health and vitality," said Jonathan Bortz, MD, chairman of the Albion scientific advisory board.