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Related to methyl red test: nitrate reduction test, urease test


Relating to or being the simplest hydrocarbon unit, CH3, that can occur as a substituent in an organic compound or as an ion or radical.

[French méthyle, back-formation from méthylène, methylene; see methylene.]

me·thyl′ic (mə-thĭl′ĭk) adj.
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.


(ˈmiːθaɪl; ˈmɛθɪl)
1. (Elements & Compounds) (modifier) of, consisting of, or containing the monovalent group of atoms CH3
2. (Elements & Compounds) an organometallic compound in which methyl groups are bound directly to a metal atom
[C19: from French méthyle, back formation from methylene]
methylic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈmɛθ əl)

the univalent group CH3, derived from methane.
[1835–45; by back formation from methylene]
me•thyl•ic (mɛˈθɪl ɪk, mə-) adj.


a combining form occurring in the names of chemical compounds in which the univalent group CH3 is present: methylamine.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


The organic radical CH3, derived from methane. The methyl group occurs in many important chemical compounds such as methyl alcohol.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.methyl - the univalent radical CH3- derived from methane
alkyl, alkyl group, alkyl radical - any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons
aminomethane - a methyl with the hydrogen atom replaced by an amino radical
hydroxymethyl - a methyl with hydroxide replacing the hydrogen atoms
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈmɛθɪl] nmetile m
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
MR-VP medium was used for methyl red test. The sterile glucose broth was inoculated with the test culture 7ml and incubated at 37[degrees]C for 24hr.
For methyl red test, 2-3 drops of Methyl red was added after incubation, and the color change from yellow to red color was scored as positive result while negative test indicated no color change.
Preliminary identification of strains obtained in pure culture was based on Gram staining and the typology process was performed by assessing the samples with catalase, coagulase, sucrose use (glucose or saccharose), indole test, methyl red test, Voges-Proskauver test, and using the citrate as carbon source, urease activity regarding biochemical and physical properties.