An animation collectible is an item related to a cartoon, movie, or television show that is collected by fans. The two crossword solutions for this term are CELL (4 letters) and CEL (3 letters). CELL stands for 'Cels of Lenticular Laserdiscs' which are a type of animation collectible that are made up of a series of transparent cels that are layered over a lenticular lens. CEL stands for 'CELLULOID' which is a type of animation collectible that is made from a thin sheet of cellulose nitrate.