I am not a translator and do not know of the proper translation, but another closely related word that I'm particularly fond of is hypostatize. There is also the noun form hypostatization.
The general definition is very close to reification. It means to attribute real ontological identity to a concept and Mirriam Webster gives the root as the Greek hypostatos which is "substantially existing."
Here is my favorite example of hypostatizing...
From Insight Into Emptiness page 258, “For example, a young woman may want to have a child. When she is asleep, she dreams she gives birth to a child and is elated. But later in the dream, the child dies and she is devastated. However, on waking, she sees that neither the exhilarating appearance of having a child that brought her joy nor the horrible appearance of the child’s death that caused her anguish is real.”
Before she woke up she hypostatized her child (attributed real concrete existence to it) and this led to both elation and anguish. After she woke she stopped the hypostatization and the elation and anguish faded. However, there is also something very subtle happening when she woke up: she considered the dream unreal in relation to something else! Unreal and real are a dichotomy and mutually dependent notions :)
Another great and famous example is the Ambrosia, Water, and Pus in the same cup respectively to a God, a Human and a Hungry Ghost. Which is real? Which is unreal? What is worthy of being hypostatized and what is not?