automaticity
C2CEFR level
88/100Rarity: very rare
TechnicalRegister
The intrinsic ability of specialised cardiac cells to depolarise and initiate an impulse spontaneously.
Enhanced automaticity in ectopic foci can override the sinus node and drive an arrhythmia.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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