[hep-teyn] /ˈhɛp teɪn/
any of nine isomeric hydrocarbons, C 7 H 16 , of the alkane series, some of which are obtained from petroleum: used in fuels as solvents, and as chemical intermediates.
an alkane existing in nine isomeric forms, esp the isomer with a straight chain of carbon atoms (n-heptane), which is found in petroleum and used as an anaesthetic. Formula: C7H16
A volatile, colorless, highly flammable liquid hydrocarbon obtained in the fractional distillation of petroleum. It is used as a standard in determining octane ratings (combustion characteristics), as an anesthetic, and as a solvent. Heptane is the seventh member of the alkane series. Chemical formula: C7H16.
[hep-tang-gyuh-ler] /hɛpˈtæŋ gyə lər/ adjective 1. having seven angles. /hɛpˈtæŋɡjʊlə/ adjective 1. having seven angles
[hep-tuh-nohn] /ˈhɛp təˌnoʊn/ noun, Chemistry. 1. any of three isomeric ketones, C 11 H 14 O, derived from .
[hep-tahr-kee] /ˈhɛp tɑr ki/ noun, plural heptarchies. 1. (often initial capital letter) the seven principal concurrent Anglo-Saxon kingdoms supposed to have existed in the 7th and 8th centuries. 2. government by seven persons. 3. an allied group of seven states or kingdoms, each under its own ruler. /ˈhɛptɑːkɪ/ noun (pl) -chies 1. government by seven […]
[hep-tuh-stik] /ˈhɛp təˌstɪk/ noun, Prosody. 1. a strophe, stanza, or poem consisting of seven lines or verses. /ˈhɛptəˌstɪk/ noun 1. (prosody) a poem, strophe, or stanza that consists of seven lines