# Functor

From Glottopedia

**Functor** is a notion which DiSciullo & Williams adopt from Categorial Grammar to express relationships between entities.

### Example

if one wishes to express the idea that *y* is the sister of *x*, the property 'sister of' can be formalized by using a functor, say F, and write '*y*=F(*x*)'. See Function composition.

### Link

Utrecht Lexicon of Linguistics

### References

- Di Sciullo, A. M. and E. Williams 1987.
*On the Definition of Word,*MIT-press, Cambridge, Mass.