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 (stĕr′oid′, stîr′-)
1. Any of numerous fat-soluble organic compounds that have a core structure of 17 carbon atoms arranged in four rings, found naturally in animals, plants, and fungi, or produced synthetically. Steroids include the sterols (such as cholesterol), sex hormones (such as estrogen and testosterone), corticosteroid hormones (such as cortisol), bile acids, and anabolic steroids.
2. Informal An anabolic steroid.
on steroids
In a very large, enhanced, or exaggerated form: "a weapon one observer had called an M16 on steroids" (Stephen Coonts).

ste′roid′, ste·roi′dal (stĕ-roid′l, stĭ-) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.steroidal - of or relating to steroid hormones or their effects
nonsteroidal - not steroidal or not having the effects of steroid hormones
References in periodicals archive ?
Steroidal saponins from Solanum nigrum," Journal of natural products, 69:1158-1163: (2006)
phytochemical studies on the genus Solanum showed the presence of alkaloids (Maxwell et al, 1996), flavonoids (Kang et al, 1998), steroidal glycoside (Ripperger, 1995) and steroidal saponins (Zamilpa et al 2002).
Trigonella foenum-graecum (fenugreek) is rich in steroidal saponins that have been demonstrated to exert estrogenic effects and to increase sexual function in men.
Conclusion: The aldose reductase inhibitory activity of Balanites fruits is due to the steroidal saponins present.
Solasodine A3/4- sitosterol diosgenin [6 7] triterpenes [8] steroidal saponins [9] and steroidal glycoalkaloids [10-12] are also reported from the fruit.
Effects of Yucca schidigera extract on fermentation and degradation of steroidal saponins in the rumen simulation technique (RUSITEC).
Inhibitory effect of a new steroidal saponins, OSW-1, on ovarian functions in rats.
Herbs that may exert estrogenic effects on oral administration include those containing steroidal saponins such as wild yam (Dioscorea villosa L.