STEROID -
Noun: One of a group of hormones chemically related to cholesterol. They include oestrogen, which controls female sexual development, androgen , which produces male characteristics and builds up muscular protein tissue, progesterone, which plays an important part in the regulation of the menstrual cycle and in pregnancy, and the corticosteroids , which are responsible for chemically making use of the carbohydrates and fats we eat, controlling inflammation, and salt and water regulation. Steroids may be naturally occurring or they may be synthesised.

Greek - stereós = solid, stiff +

Greek - oeides = in the form of

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