Pioneer studying radiation remedy involving iodine (5)
I believe the answer is:
curie
'pioneer studying radiation' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'remedy involving iodine' is the wordplay.
'remedy' becomes 'cure' (synonyms).
'involving' means one lot of letters goes inside another.
'iodine' becomes 'I' (I is the chemical symbol for iodine).
'cure' going around 'i' is 'CURIE'.
Can you help me to learn more?
(Other definitions for curie that I've seen before include "Marie -, Fr. physicist" , "measure of radioactivity" , "One of two Nobel prizewinners" , "Marie --, French physicist" , "Some radiation" .)