What is "gelatinate"

Gelatinate \Ge*lat"i*nate\, v. t. [imp. & p. p. Gelatinated; p. pr. & vb. n. Gelatinating.] To convert into gelatin, or into a substance resembling jelly.

Gelatinate \Ge*lat"i*nate\, v. i. To be converted into gelatin, or into a substance like jelly.

Lapis lazuli, if calcined, does not effervesce, but gelatinates with the mineral acids.
--Kirwan.

vb. 1 (context transitive English) To convert into gelatin or a jelly-like substance. 2 (context intransitive English) To be converted into gelatin or a jelly-like substance.