| homosteroid | A steroid that has had at least one of the rings in its structure expanded. (05 Mar 2000) |
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| homosteroids | Steroids whose structure has been expanded by the addition of one or more carbon atoms to the ring skeleton in any of the four rings. (12 Dec 1998) |
| D-homosteroid | A steroid in which the D ring is made up of six carbon atoms instead of the usual five. (05 Mar 2000) |
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