Parliament to quote rises based on consumption (8)
I believe the answer is:
dietetic
'based on consumption' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs can occasionally mean the same thing.
'parliament to quote rises' is the wordplay.
'parliament' becomes 'diet' (diet can mean a parliament in some countries).
'to quote' becomes 'cite' (synonyms).
'rises' shows that the letters should be reversed in order.
'cite' back-to-front is 'etic'.
'diet'+'etic'='DIETETIC'
Can you help me to learn more?
(Other definitions for dietetic that I've seen before include "it's to do with what you eat" , "of nutrition" , "relating to food intake" .)