[pen-teyn] /ˈpɛn teɪn/
noun, Chemistry, Pharmacology.
a hydrocarbon of the methane series, existing in three liquid isomeric forms.
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 as a solvent and in medicine as an anesthetic.
an alkane hydrocarbon having three isomers, esp the isomer with a straight chain of carbon atoms (n-pentane) which is a colourless flammable liquid used as a solvent. Formula: C5H12
A colorless, flammable hydrocarbon derived from petroleum and used as a solvent. Pentane occurs in three isomers and is the fifth member of the alkane series. Chemical formula: C5H12.
[pen-tang-guh l] /ˈpɛn tæŋ gəl/ noun 1. . /ˈpɛnˌtæŋɡəl/ noun 1. another name for pentagram n. c.1300; see penta- + angle (n.). In some early uses perhaps a corruption of pentacle. Related: Pentangular.
[pen-tang-gyuh-ler] /pɛnˈtæŋ gyə lər/ adjective 1. having five angles and five sides; pentagonal. /pɛnˈtæŋɡjʊlə/ adjective 1. having five angles
- Pentapiperium methylsulfate
pentapiperium methylsulfate pen·ta·pi·per·i·um meth·yl·sul·fate (pěn’tə-pī-pěr’ē-əm měth’əl-sŭl’fāt’) n. An anticholinergic agent used especially in the treatment of peptic ulcer.
[pen-tuh-ploid] /ˈpɛn təˌplɔɪd/ adjective 1. having a chromosome number that is five times the haploid number. noun 2. a pentaploid cell or organism.