1. (v. t.) To expand; to distend; to enlarge in all directions; as, the light dilates the pupils\; air is dilated by increase of heat.

2. (v. t.) To enlarge upon; to relate at large; to tell copiously or diffusely.

3. (v. i.) To grow wide; to expand; to swell or extend in all directions.

4. (v. i.) To speak largely and copiously; to dwell in narration; to enlarge; -- with on or upon.

5. (a.) Extensive; expanded.

add to aggrandize amplify augment bag balloon belly belly out bilge billow bloat blow up bouge broaden bug build build up bulge bulk bulk out crescendo descant describe detail develop discuss dissert dissertate distend elaborate enlarge enlarge upon evolve expand expatiate explicate extend fill out goggle greaten hike hike up huff increase inflate lengthen magnify narrate particularize pooch pop pouch pout prolong protract puff puff up pump pump up raise rarefy recite recount rehearse rehearse in extenso relate relate at large round out sermonize snowball stretch sufflate swell swell out tumefy unfold up widen work out