Formed an idea or plan in your mind; or became pregnant.
From Latin 'concipere' (to take in, become pregnant), combining 'con-' (together) and 'capere' (to take). The intellectual meaning (forming ideas) developed by metaphor from the biological one.
When people say 'I conceived of an idea,' they're using the pregnancy metaphor—languages across the world borrow biological reproduction to describe creative thinking, because making ideas feels like making babies!
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