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1. A sweet-tasting crystalline alkaloid, C5H11NO2, found in sugar beets and other plants, used to treat certain metabolic disorders, especially an enzyme defect that causes excessive levels of homocysteine in the blood and urine.
2. Any of several alkaloids with similar structures.
[Latin bēta, beet + -ine.]
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.
betaine(ˈbiːtəˌiːn; -ɪn; bɪˈteɪiːn; -ɪn)
1. (Elements & Compounds) a sweet-tasting alkaloid that occurs in the sugar beet and other plants and in animals. Formula: C5H11NO2
2. (Chemistry) (plural) a group of chemical compounds that resemble betaine and are slightly basic zwitterions
[C19: from New Latin Bēta beet + -ine2]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
be•ta•ine(ˈbi təˌin, -ɪn; bɪˈteɪ in, -ɪn)
a colorless crystalline alkaloid, C5H11NO2, usu. obtained from sugar beets or synthesized from glycine and used in medicine.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.