| ampleness | (noun) the property of impressive largeness in size | - |
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| (noun) the property of being more than sufficient; comfortable sufficiency | - |
| amplification | (noun) (electronics) the act of increasing voltage or power or current | - |
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| (noun) addition of extra material or illustration or clarifying detail | Synonyms: elaboration |
| (noun) the amount of increase in signal power or voltage or current expressed as the ratio of output to input | Synonyms: gain |
| amplifier | (noun) electronic equipment that increases strength of signals passing through it | - |
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| amplitude | (noun) greatness of magnitude | - |
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| (noun) the property of copious abundance | Synonyms: bountifulness, bounty |
| (noun) (physics) the maximum displacement of a periodic wave | - |