| alteration | 1. A change. 2. A changing; a making different. (05 Mar 2000) |
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| modal alteration | In electric irritability, a change in the mode of response of degenerated muscle to electric stimulation, the contraction being sluggish instead of quick. (05 Mar 2000) |
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| qualitative alteration | In electric irritability, a change in which the muscle contracts as readily on application of the anode as on that of the cathode. (05 Mar 2000) |
| quantitative alteration | In electric irritability, a gradual loss of contractility in a muscle in response to static, faradic, and galvanic currents successively. (05 Mar 2000) |