Involution

內卷 /内卷

nèijuǎn

(entanglement; a spiralling inwards)

內卷 /内卷

nèijuǎn

(a cessation of development or progress despite intense inner competition)

內卷 /内卷

nèijuǎn

(a state of increased competition for limited resources, requiring great effort to stay ahead)

對合 /对合

duìhé

(mathematics; an endofunction whose square is equal to the identity function; a function equal to its inverse)

退化

tuìhuà

(shrinking of an organ to a former size)