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Metanas.

methane (n.)

"inflammable colorless and odorless gas, marsh gas," 1867, coined from chemical suffix -ane + syllable abstracted from methyl.

methyl (n.)

univalent hydrocarbon radical, 1840, from German methyl (1840) or directly from French méthyle, back-formation from French méthylène (see methylene).

methylene (n.)

1835, from French méthylène (1834), coined by Jean-Baptiste-André Dumas (1800-1884) and Eugène-Melchior Péligot (1811-1890) from Greek methy "wine" (see mead (n.1)) + hyle "wood" + Greek name-forming element -ene. So called because detected in wood alcohol. "The breakdown of methylene into methyl and -ene, and the identification of the last syllable of methyl with the general suffix -ly, led to the use of meth- as a separate combining-element, as, for example, in methane, methacrylic" [Flood].

 

mead (n.1)

"fermented honey drink," Old English medu, from Proto-Germanic *meduz (cognates: Old Norse mjöðr, Danish mjød, Old Frisian and Middle Dutch mede, Old High German metu, German Met "mead"), from PIE root *medhu- "honey, sweet drink" (cognates: Sanskrit madhu "sweet, sweet drink, wine, honey," Greek methy "wine," Old Church Slavonic medu, Lithuanian medus "honey," Old Irish mid, Welsh medd, Breton mez "mead"). Synonymous but unrelated early Middle English meþeglin yielded Chaucer's meeth.

 

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