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' (chemical symbol).
'nitrogen' becomes 'N' (N is the chemical symbol for nitrogen).
'c'+'or'+'n'='CORN'
'as' acts as a 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" .)