Steroid ring system: The parent ABCD steroid ring system (hydrocarbon framework) is shown with IUPAC-approved ring lettering and atom numbering. A steroid is an organic compound with four rings arranged in a specific configuration.Examples include the dietary lipid cholesterol, the sex hormones estradiol and testosterone and the anti-inflammatory drug dexamethasone.teroid ring system: The parent ABCD steroid ring system (hydrocarbon framework) is shown with IUPAC-approved ring lettering and atom numbering. A steroid is an organic compound with four rings arranged in a specific configuration.
Adj. 1. intramural-carried on within the bounds of an institution or community; most of the students participated actively in the college's intramural sports program. extramural-carried on outside the bounds of an institution or community; extramural sports. Translations.
Prefix intra-. Intra- means âwithinâ or âinside.â When used as a prefix with words, it means âwithin a group.â There are many words which are formed with the prefix intra- for example, intracompany, intranet, intramural football, etc.