Plural form of eolipile; multiple ancient steam-driven spinning devices or the concept of such devices collectively.
Direct plural of 'eolipile' (from Greek 'aiolos' + 'pyle'). The plural form is commonly used when discussing multiple historical examples or variations of these ancient engines.
Ancient inventors built dozens of these gadgets for temples and public displays, using them to automatically open doors or spray water on crowds—basically the first programmable machines!
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