Scientific model compounded error with variable (6)
I believe the answer is:
orrery
'scientific model' is the definition.
'orrery' can be an answer for 'model' (orrery is a kind of model). I'm unsure of the 'scientific' bit.
'compounded error with variable' is the wordplay.
'compounded' indicates anagramming the letters.
'with' says to put letters next to each other.
'variable' becomes 'y' (algebra).
'error' anagrammed gives 'orrer'.
'orrer'+'y'='ORRERY'
Can you help me to learn more?
(Other definitions for orrery that I've seen before include "Clockwork model of the solar system" , "Planetarium that illustrates the positions and motions of bodies in the solar system" , "Mechanical model of the solar system" , "Err, Roy, on the side of a model of the solar system" , "Planetary model" .)