from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An unsized white paper impregnated with litmus and used as a pH or acid-base indicator.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Paper containing a water-soluble mixture of different dyes extracted from certain lichens. The resulting piece of paper is used to test materials for acidity.
from the GNU version of the Collaborative International Dictionary of English
- n. unsized paper saturated with blue or red litmus, -- used in testing for acids or alkalies.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. unsized paper treated with litmus for use as an acid-base indicator
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