gelatin

[jel-uh-tn] /ˈdʒɛl ə tn/
noun
1.
a nearly transparent, faintly yellow, odorless, and almost tasteless glutinous substance obtained by boiling in water the ligaments, bones, skin, etc., of animals, and forming the basis of jellies, glues, and the like.
2.
any of various similar substances, as vegetable gelatin.
3.
a preparation or product in which such an animal or vegetable substance is the essential constituent.
4.
an edible jelly made of this substance.
5.
Also called gelatin slide. Theater. a thin sheet made of translucent gelatin colored with an aniline dye, placed over stage lights, and used as a color medium in obtaining lighting effects.
Also, gelatine.
Origin
1790-1800; < French gélatine < Medieval Latin gelātina, equivalent to Latin gelāt(us) frozen, thickened, past participle of gelāre (gel- freeze + -ātus -ate1) + -ina -in2
British Dictionary definitions for gelatine

gelatine

/ˈdʒɛləˌtiːn/
noun
1.
a colourless or yellowish water-soluble protein prepared by boiling animal hides and bones: used in foods, glue, photographic emulsions, etc
2.
an edible jelly made of this substance, sweetened and flavoured
3.
any of various substances that resemble gelatine
4.
Also called (informal) gel. a translucent substance used for colour effects in theatrical lighting
Word Origin
C19: from French gélatine, from Medieval Latin gelātina, from Latin gelāre to freeze
Word Origin and History for gelatine
n.

1713, from French gélatine (17c.) "clear jelly-like substance, fish broth," from Italian gelatina, from gelata "jelly," from gelare "to jell," from Latin gelare "to freeze" (see cold (adj.)), + chemical suffix -ine (2). Spelling without the final -e is from 1800. "The form without final -e is in scientific (or pseudo-scientific) use only ..." [Fowler].

gelatin

n.

see gelatine.

gelatine in Medicine

gelatin gel·a·tin or gel·a·tine (jěl'ə-tn)
n.
A derived protein formed by boiling collagen of animal tissues.

gelatine in Science
gelatin
  (jěl'ə-tn)   
An odorless, colorless protein substance obtained by boiling a mixture of water and the skin, bones, and tendons of animals. The preparation forms a gel when allowed to cool. It is used in foods, drugs, glue, and film.