[eth-uh-leen] /ˈɛθ əˌlin/ Chemistry

containing the .
Also called ethene, olefiant gas. a colorless, flammable gas, C 2 H 4 , having a sweet, unpleasant odor and taste, the first member of the , usually obtained from petroleum and natural gas: used as an agent to improve the color of citrus fruits, in the synthesis of , , , and other organic compounds, and in medicine chiefly as an inhalation anesthetic.
a colourless flammable gaseous alkene with a sweet odour, obtained from petroleum and natural gas and used in the manufacture of polythene and many other chemicals. Formula: CH2:CH2 Also called ethene

1852, from ethyl + -ene, probably suggested by methylene.

ethylene eth·yl·ene (ěth’ə-lēn’)

A colorless, flammable gas that occurs naturally in certain plants and can be obtained from petroleum and natural gas. As a plant hormone, it ripens and colors fruit, and it is manufactured for use in agriculture to speed these processes. It is also used as a fuel and in making plastics. Ethylene is the simplest alkene, consisting of two carbon atoms joined by a double bond and each attached to two hydrogen atoms. Also called ethene. Chemical formula: C2H4.


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  • Ethylenediaminetetraacetic-acid

    [eth-uh-leen-dahy-uh-meen-te-truh-uh-see-tik, -set-ik, -min-; eth-uh-leen-dahy-uh-meen-te-truh-uh-see-tik, -set-ik, -min-] /ˈɛθ ə linˈdaɪ ə minˈtɛ trə əˈsi tɪk, -ˈsɛt ɪk, -mɪn-; ˌɛθ ə linˌdaɪ ə minˌtɛ trə əˈsi tɪk, -ˈsɛt ɪk, -mɪn-/ noun, Chemistry, Pharmacology. 1. . ethylenediaminetetraacetic acid eth·yl·ene·di·a·mine·tet·ra·a·ce·tic acid (ěth’ə-lēn-dī’ə-mēn-tět’rə-ə-sē’tĭk) n. EDTA.

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