Egg scandal involves Kairos (6)
I believe the answer is:
gamete
'egg' is the definition.
The answer and definition can be both body parts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'scandal involves kairos' is the wordplay.
'scandal' becomes 'gate' (as in Watergate and other formations).
'involves' means one lot of letters goes inside another.
'kairos' becomes 'me' (where the crossword setter is 'Kairos').
'gate' enclosing 'me' is 'GAMETE'.
Can you help me to learn more?
(Other definitions for gamete that I've seen before include "Reproductive cell" , "Cell which unites with another in reproduction to form a zygote" , "Egg- or sperm-cell" , "Germ cell in reproduction" , "Male or female germ cell" .)