[per-klawr-eyt, -klohr-]
noun Chemistry.
a salt or ester of perchloric acid, as potassium perchlorate, KClO 4 .

1820–30; per- + chlorate Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
perchlorate (pəˈklɔːreɪt)
any salt or ester of perchloric acid. Perchlorate salts contain the ion ClO4--

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

perchlorate per·chlo·rate (pər-klôr'āt')
An ester or salt of perchloric acid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
perchlorate   (pər-klôr'āt')  Pronunciation Key 
A salt of perchloric acid, containing the group ClO4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Limits on toxic perchlorate to be set for tap water.
Perchlorate is a naturally occurring salt that is also a component of rocket
  fuel and fireworks.
AE: the only large scale use of perchlorate is as an oxidizer for solid
Perchlorate generally leaves these organs in a few hours.
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