This is the 8683rd most frequent Catalan word.
engruiximent
Thickening.
Here, 'engruiximent' is used in a culinary context to describe the process of making the soup thicker.
La recepta requereix l'engruiximent de la sopa.
The recipe requires the thickening of the soup.
In this sentence, 'engruiximent' is used metaphorically to describe the increasing complexity of the plot.
L'engruiximent de la trama en aquesta novel·la la fa més interessant.
The thickening of the plot in this novel makes it more interesting.
This usage of 'engruiximent' pertains to a physical state change, describing the process of the ice becoming thicker.