To emerge from or break out of a cyst, especially when a parasitic organism escapes its protective casing.
From the prefix 'ex-' meaning 'out' combined with 'cyst,' which comes from Greek 'kystis' meaning 'bladder' or 'sac.' The word developed in medical and biological contexts in the 19th century.
Parasites like certain worms have evolved to know exactly when and how to excyst inside a host's body—it's a microscopic escape artist performance that scientists are still trying to fully understand!
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