Where does “engrosamiento” come from?

engrosamiento (Spanish) comes from Spanish engrosar, from Spanish en-, from Old Spanish en-, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

engrosamiento (Spanish): thickening

Definitions

thickening

Ancestry of “engrosamiento”, step by step

Step	Language	Word	Meaning
1	Spanish	engrosar	to swell up, thicken
2	Spanish	en-	en- all meanings
3	Old Spanish	en-	—
4	Latin	īn-	un-, non-, not
5	Latin	în	in, at, on, upon, from (space)
6	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
7	Proto-Italic	en	in
8	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Proto-Italic en →