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Definitions of propylene:

noun: a flammable gas obtained by cracking petroleum; used in organic synthesis

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Alternative Terms
orders-of-magnitude-time scientific-notation planck-time 1-e8-s 1-e5-s 1-e2-s 1-e1-s 1-e0-s nanosecond 1-e-8-s 1-e-7-s 1-e-6-s 1-e-5-s 1-e-4-s 1-e-2-s 1-e-s kilosecond 1-e4-s 1-e6-s 1-e7-s 1-e10-s 1-e11-s 1-e12-s 1-e13-s 1-e14-s 1-e15-s 1-e16-s 1-e17-s 1-e18-s 1-e19-s-and-more orders-of-magnitude second year united-states-constitution president-of-the-united-states-2 cat menopause india 2008 half-life titanium retirement uranium louis-xiv-of-france union-of-soviet-socialist-republics life-expectancy human first-world elephant the-jazz-singer uranus century nickel olympic-games jeanne-calment telephone sound-recording-and-reproduction electric-light neptune-planet aluminium ludwig-van-beethoven symphony-no-9 tortoise french-revolution united-states pluto johann-sebastian-bach the-art-of-fugue argon 50000-quaoar mexico-country-north-america house-of-romanov exponentiation taipei breastfeed