Steroid (noun)

1. A type of organic compound that contains a specific combination of four cycloalkane rings that are joined to each other.
2. A type of drug that is derived from or similar to these compounds and that is used for a variety of medical purposes, such as to reduce inflammation and to promote muscle growth.

Origin:

From the greek στερεός (stereós, "solid, stiff") + -oid ("like, resemblin.g")

Examples:

1. Steroids are used to treat certain medical conditions, such as rheumatoid arthritis and lupus.
2. Anabolic steroids are used by some athletes and bodybuilders to increase muscle mass and strength.
3. Steroids are available only by prescription and are used to treat a variety of medical conditions.
4. Steroids can have serious side effects, such as increased risk of heart disease and liver damage.
5. Steroids are also used to reduce inflammation in conditions such as asthma and eczema.