Carbon or nitrogen as the result of pressure? (4)
I believe the answer is:
corn
'the result of pressure?' is the definition.
I can't tell whether this defines the answer.
'carbon or nitrogen' is the wordplay.
'carbon' becomes 'C' (C is the chemical symbol for carbon).
'nitrogen' becomes 'N' (N is the chemical symbol for nitrogen).
'c'+'or'+'n'='CORN'
'as' is the link.
Can you help me to learn more?
(Other definitions for corn that I've seen before include "Grain on a toe?" , "In song from 'Oklahoma' this is as high as an elephant's eye" , "Maize" , "digital growth" , "Hard growth on foot" .)