An alternative or archaic spelling of anesthesia; the loss of sensation or consciousness induced by anesthetic agents.
Variant spelling of 'anesthesia' from Greek 'an-' (without) + 'aesthesis' (sensation). This older form reflects historical spelling variations before standardization.
You'll mostly see 'anesthesia' in modern English, but 'anesthesis' appears in older medical texts and some British medical literature—language even in specialized fields changes over time!
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