Homoeopathy (5 syl.). The plan of curing a disease by very minute doses of a medicine which would in
healthy persons produce the very same disease. The principle of vaccination is a sort of homoeopathy,
only it is producing in a healthy person a mitigated form of the disease guarded against. You impart a mild
form of small-pox to prevent the patient from taking the virulent disease. (Greek, homoios pathos, like
disease.)

I never heard vaccination called a form of homeopathy!