Imitate, model (8)
I believe the answer is:
simulate
I believe this is a double definition.
'imitate' is the first definition.
(I know that imitate can be written as simulate)
'model' is the second definition.
(I know that model can be written as simulate)
(Other definitions for simulate that I've seen before include "Reproduce conditions of by means of model" , "Re-create conditions for testing" , "Imitate the form or condition of" , "Assume" , "Amulets I use to imitate condition of" .)