| Title | petrochemical |
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| Text |
Merriam-Webster's Collegiate Dictionary pet·ro·chem·i·cal \\ˌpe-trō-ˈke-mi-kəl\\ noun DATE 1942 : a chemical isolated or derived from petroleum or natural gas • pet·ro·chem·is·try \\-ˈke-mə-strē\\ noun English Etymology petrochemical 1913, formed in Eng. from Gk. petro-, comb. form of petra "rock" + chemical (q.v.). Oxford Advanced Learner's Dictionary-牛津双解-OALD7 petrochemical petro·chem·ical / 7petrEu5kemikl; NAmE 7petrou- / noun any chemical substance obtained from petroleum oil or natural gas 石油化学产品: the petrochemical industry 石油化学工业 Webster's Third New International Dictionary, Unabridged pe·tro·chemical I. \|pe.trō+\ adjective Etymology: petr- + chemical, adjective 1. : of or relating to the chemistry of rocks < a thorough petrochemical study of certain weathering profiles — F.J.Pettijohn > 2. a. : of or relating to the production of petrochemicals < the petrochemical industry > b. : produced as a petrochemical < petrochemical acetone > II. noun Etymology: petr- + chemical, n. : a chemical isolated from petroleum or natural gas or a derivative produced from such a substance by chemical reaction — used chiefly commercially < chemicals derived from petroleum and natural gas, such as ammonia, carbon black, and thousands of organic chemicals, are classified as petrochemicals — Chemical & Engineering News > |
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