GELAT'INATE, verb intransitive To be converted into gelatin or into a substance like jelly. Lapis lazuli, if calcined, does not effervesce, but gelatinates with the mineral acids. GELAT'INATE, verb transitive To convert into gelatin or into a substance resembling jelly.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI