vi to become larger.
2. amplify ·vt to render larger, more extended, or more intense, and the like;
used especially of telescopes, microscopes, ·etc.
3. amplify ·vt to enlarge by addition or discussion; to treat copiously by adding particulars, illustrations, ·etc.; to expand; to make much of.
4. amplify ·vi to speak largely or copiously; to be diffuse in argument or description; to dilate; to expatiate;
often with on or upon.