petrochemicallyadv.1
/ˌpɛtrəʊˈkɛmᵻkli/, U.S. /ˌpɛtroʊˈkɛmək(ə)li/ In relation to petrochemistry (cf. petrochemistry n.1); by a petrochemical process or method.
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the world > the earth > earth sciences > geology > geochemistry > [adverb]
petrochemically1952
1952 Trans. Edinb. Geol. Soc. 15 82 Ophitic texture is the result of delayed crystallisation of augite from magma characterised petrochemically by marked undersaturation in the pyroxene-components.
1973 Nature 27 Apr. 566/1 ‘Petrographically’ the dredged lavas are typically submarine fine grained, vesicular and porphyritic basalts... ‘Petrochemically’ the basalts are classified as tholeiites according to the Yoder and Tilley normative scheme.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
petrochemicallyadv.2
/ˌpɛtrəʊˈkɛmᵻkli/, U.S. /ˌpɛtroʊˈkɛmək(ə)li/ In relation to the chemistry of petroleum (cf. petrochemistry n.2); by a petrochemical process or method.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [adverb] > in a petrochemical manner
petrochemically1963
1963 Economist 28 Sept. 1140 60 per cent of world nitrogen is petrochemically derived.
1994 Business Ethics Sept. 25/2 Roddick uses petrochemically sourced ingredients such as mineral oil, petrolatum, carbomers, and isopropyl myristate.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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