DILATE (2)

Di‐late″, v. i. 1. 1. To grow wide; to expand; to swell or extend in all directions.
His heart dilates and glories in his strength. Addison. 2. 2. To speak largely and copiously; to dwell in narration; to enlarge; — with on or upon.
But still on their ancient joys dilate. Crabbe.