n.
Variant: also chron · axy
Pronunciation: ' kr ō - ˌ nak-s ē , ' krä-
Function: noun
Etymology: French chronaxie, from chron- + Greek axia value, from axios worthy ― more at AXIOM
Date: 1922
: the minimum time required for excitation of a structure (as a nerve cell) by a constant electric current of twice the threshold voltage