Dictionary:

gelatinize

  (jə-lăt'n-īz', jĕl'ə-tn-īz')

1. To convert to gelatin or jelly.
2. To coat with gelatin.

To become gelatinous.

verb

To change or be changed from a liquid into a soft, semisolid, or solid mass: clot, coagulate, congeal, curdle, jell, jelly, set¹. See solid/liquid/consistency.

1. To convert into gelatin.
2. To become gelatinous.

To convert into a jelly, or to become converted into gelatin. Feed grains are said to be gelatinized when they are treated by a combination of moisture, heat and pressure so as to rupture their starch granules.

The verb has 3 meanings:

Meaning #1: coat with gelatin

Meaning #2: become gelatinous or change into a jelly
  Synonym: gelatinise

Meaning #3: convert into gelatinous form or jelly
  Synonym: gelatinise