An ancient device or incubator designed to hatch eggs artificially using heat.
From Greek 'ek-' (out) + 'kaleo' (to call) + '-bion' (life), literally 'that which calls life forth.' Ancient sources describe Egyptian and Greek egg-hatching apparatus.
Ancient civilizations figured out artificial egg incubation thousands of years ago! The Egyptians built special heated chambers, and the Greeks named it something like 'the life-caller-outer'—which is pretty poetic.
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