Definition of "spring up" []

• To appear suddenly. (verb)
• To come rapidly into existence. (verb)

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• "But now, suppose one mutant tree were to spring up in the middle of the Forest of Friendship."
• "Aristotle's De generatione animalium reflected the state of science in the fourth century, B.C., when it asserted that oysters, mussels, sponges, lice, mosquitoes, flies, and some plants spring up directly from various organic or inorganic elements."
• "  “Urban legends; they spring up when times are grim,” continued the homilist."