ppt.

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Chemistry.


Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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ppt in Medicine

ppt

abbr.

parts per thousand
parts per trillion
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.