Engineer got layout that's absolutely true (9)
I believe the answer is:
tautology
'absolutely true' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'engineer got layout' is the wordplay.
'engineer' is an anagram indicator.
'got'+'layout'='gotlayout'
'gotlayout' is an anagram of 'TAUTOLOGY'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for tautology that I've seen before include "identifying myself personally?" , "Repetition in different words for a gouty lot" , "as new innovation, perhaps" , "Use of words repeating something already implied" , "Unnecessary repetition of words" .)