[pe-troh-broo-zhuh n, -shuh n] /ˌpɛ troʊˈbru ʒən, -ʃən/
a member of a 12th-century sect in S France that rejected the Mass, infant baptism, prayers for the dead, sacerdotalism, the veneration of the cross, and the building of churches.
[pe-troh-byoot-n-awl] /ˌpɛ troʊˈbyut nˌɔl/ noun 1. See under (def 2). [byoot-n-awl, -ol] /ˈbyut nˌɔl, -ˌɒl/ noun, Chemistry. 1. . 2. butanol that is made from fossil fuels (petrobutanol) or from certain plants or algae (biobutanol) and which is used as an alternative to gasoline. /ˈbjuːtəˌnɒl/ noun 1. a colourless substance existing in four isomeric forms. […]
petroccipital pet·roc·cip·i·tal (pět’rŏk-sĭp’ĭ-tl) adj. Of or relating to the petrous portion of the temporal bone and to the occipital bone of the skull.
[pe-troh-kem-i-kuh l] /ˌpɛ troʊˈkɛm ɪ kəl/ noun 1. a substance obtained from petroleum or natural gas, as gasoline, kerosene, or petrolatum. adjective 2. of or relating to petrochemistry or a petrochemical. /ˌpɛtrəʊˈkɛmɪkəl/ noun 1. any substance, such as acetone or ethanol, obtained from petroleum or natural gas adjective 2. of, concerned with, or obtained from […]
[pe-troh-kem-uh-stree] /ˌpɛ troʊˈkɛm ə stri/ noun 1. the branch of chemistry dealing with petroleum or its products. 2. the chemistry of rocks. /ˌpɛtrəʊˈkɛmɪstrɪ/ noun 1. the chemistry of petroleum and its derivatives 2. the branch of chemistry concerned with the chemical composition of rocks