One of the mysteries of the English language finally explained.
Any of a range of methylated derivatives of cellulose, varying in the number of methoxyl groups, which form viscous solutions and can be used as thickening, emulsifying, and stabilizing agents (especially in foodstuffs), as a laxative, and in adhesives.
1920s; earliest use found in Journal of the Chemical Society. From methyl + cellulose.
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