phenolphthalein
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nɔlˈθæl noun Chemistry, Pharmacology.
a white, crystalline compound, C 2 0 H 1 4 O 4 , used as an indicator in acid-base titration and as a laxative.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To phenolphthalein
Collins
World English Dictionary
phenolphthalein (ˌfiːnɒlˈθeɪliːn, -lɪɪn, -ˈθæl-) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| a colourless crystalline compound used in medicine as a laxative and in chemistry as an indicator. Formula: C20H14O4 | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Phenolphthalein
is always a great word to know.
So is bezoar. Does it mean:
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
American Heritage
Medical Dictionary
phenolphthalein phe·nol·phthal·ein (fē'nōl-thāl'ēn', -thāl'ē-ĭn, -thā'lēn', -thā'lē-ĭn)
n.
A white or pale yellow crystalline powder that is used as an acid-base indicator and as a laxative.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
| phenolphthalein (fē'nōl-thāl'ēn') Pronunciation Key
A white or pale-yellow, crystalline powder used as an indicator for acid and basic solutions. In solutions that are either neutral or basic, it is colorless, while it is pink or red in solutions that are alkali. It is also used as a laxative and in making dyes. Chemical formula: C20H14O4. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia
phenolphthalein
an organic compound of the phthalein family that is widely employed as an acid-base indicator and as a laxative.
Learn more about phenolphthalein with a free trial on Britannica.com.
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
My question has to do with the preparation of the phenolphthalein indicator.
The phenolphthalein test is used to presumptively test for the presence of blood.
Add one drop phenolphthalein solution to each standard or sample.
Phenolphthalein is a presumptive test that reacts with the heme molecule present in blood.
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