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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
millennium 1st-millennium-bc list-of-centuries 2nd-century-bc 1st-century-bc 1st-century list-of-decades 30s-bc 20s-bc 10s-bc 0s-bc 0s 10s 20s list-of-years 4-bc 3-bc 2-bc 1 2- 3-7 list-of-state-leaders-in-bc gregorian-calendar ab-urbe-condita armenian-calendar bah-calendar berber-calendar buddhist-calendar traditional-burmese-calendar byzantine-calendar chinese-calendar sexagenary-cycle coptic-calendar ethiopian-calendar hebrew-calendar hindu-calendar bikram-samwat indian-national-calendar kali-yuga holocene-calendar iranian-calendar islamic-calendar japanese-calendar korean-calendar thai-solar-calendar leap-year-starting-on-thursday julian-calendar ovid ars-amatoria birth jesus-christ 33-wordnet dionysius-exiguus anno-domini new-testament spring winter ptolemy-of-mauretania dong-xian han-dynasty china3 emperor-ai-of-han 23-bc 27-bc empress-fu empress-zhao-feiyan 32-bc year-zero nd-bc pioneer-nd-bc prytaneis cor-n-a early-horizon marcus-antonius julian-day gela megacles pro-roscio-amer-no antipater pro-mur-na reid-anderson-2 hupa-iya-phase