Definition of "nymphosis" [nymphosis]

• In entomology, the transformation from larva to nymph or pupa. (noun)

The Century Dictionary (Public Domain)

• "In the vast majority of insects subject to metamorphoses, the hatching yields the larval form which will remain unchanged until the nymphosis."
• "And so the nonparalyzed larvae are attacked during the period of the nymphosis."
• "When the time of the nymphosis comes, the Halictus mother goes to the cells rifled by the parasite and closes them with an earthen plug as carefully as she does the rest."