amplify

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To make larger or more powerful; increase.
2. v. To add to, as by illustrations; make complete.
3. v. To exaggerate.
4. v. To produce amplification of: amplify an electrical signal.
5. v. To write or discourse at length; expatiate: Let me amplify so that you will understand the overall problem.

Century Dictionary and Cyclopedia

1. To make large or larger in volume, extent, capacity, amount, importance, etc.; enlarge or make more ample.
2. To expand in stating or describing; treat copiously, so as to present in every point of view and in the strongest lights.
3. Synonyms To expand, develop, extend, dilate, magnify.
4. . To grow or become ample or more ample.
5. To discourse more at length; speak largely or copiously; be diffuse in argument or description; expatiate; dilate: commonly with on or upon before an object: as, to amplify on the several topics of discourse.

Wiktionary

1. v. transitive To render larger, more extended, or more intense, and the like;—used especially of loudspeakers, telescopes, microscopes, etc.
2. v. transitive, rhetorical To enlarge by addition or discussion; to treat copiously by adding particulars, illustrations, etc.; to expand; to make much of.
3. v. transitive To increase the amplitude of something, especially of an electric current.

GNU Webster's 1913

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

WordNet 3.0

1. v. increase in size, volume or significance
2. v. to enlarge beyond bounds or the truth
3. v. exaggerate or make bigger
4. v. increase the volume of