noun, Chemistry. 1. (def 2). [pen-teyn] /ˈpɛn teɪn/ noun, Chemistry, Pharmacology. 1. a hydrocarbon of the methane series, existing in three liquid isomeric forms. 2. Also called normal pentane. the most important isomer of pentane, a colorless, flammable, water-insoluble, very volatile liquid, C 5 H 1 2 , obtained from petroleum by distillation: used chiefly […]
- Normal occlusion
normal occlusion n. The normal arrangement of teeth and their supporting structures that approaches an ideal or standard arrangement.
- Normal science
noun the scientific process that is considered standard; the basic process of puzzle-solving, explaining and expanding scientific paradigms
noun, Mathematics. 1. a collection of subgroups of a given group so arranged that the first subgroup is the identity, the last subgroup is the group itself, and each subgroup is a normal subgroup of the succeeding subgroup.