Past tense of 'gestate'; carried and developed as a fetus, or figuratively, developed and matured over time.
From Latin 'gestatus' combined with English past tense '-ed,' creating a regular English past tense from the Latin root.
Writers and inventors love to say their works 'gestated' for years—it's a poetic way of saying the idea developed slowly, implying something complex and valuable grew over time.
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