“A system of complementary medicine in which disease is treated by minute doses of natural substances that in a health person would produce symptoms of disease.
(The Concise Oxford Dictionary)
“Is a CAM whole medical system. In homeopathic medicine, there is a belief that “like cures like,” meaning that small, highly diluted quantities of medicinal substances are given to cure symptoms, when the same substances given at higher or more concentrated doses would actually cause those symptoms”
(National Center for Complementary and Alternative Medicine – Cited on 2016, April 16)
“A system of medical practice that treats a disease especially by the administration of minute doses of a remedy that would in healthy persons produce symptoms similar to those of the disease”.
(Merriam Webster Online Dictionary)