The medical study or science of vomiting, its causes, effects, and the substances that cause vomiting.
From Greek 'emesis' (vomiting) combined with '-logy' (study of), creating a formal medical field name following the pattern of other scientific disciplines.
Emetology used to be a serious branch of medicine when doctors thought vomiting cured diseases, but as modern medicine developed, studying vomiting became more about understanding when it's a symptom of something dangerous rather than a treatment itself.
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