| dromotropic | Influencing the velocity of conduction of excitation, as in nerve or cardiac muscle fibres. Origin: G. Dromos, a running, + trope, a turn (05 Mar 2000) |
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| positively dromotropic | Acting to increase conduction velocity. (05 Mar 2000) |
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| negatively dromotropic | Acting to diminish conduction velocity. (05 Mar 2000) |