CADENCY
cadence, cadency
(noun) a recurrent rhythmical series
Source: WordNet® 3.1
Noun
cadency (countable and uncountable, plural cadencies)
Alternative form of cadence
(heraldry) Any systematic way of distinguishing similar coats of arms belonging to members of the same family.
Source: Wiktionary
Ca"den*cy, n.
Definition: Descent of related families; distinction between the members of
a family according to their ages. Marks of cadency (Her.), bearings
indicating the position of the bearer as older or younger son, or as
a descendant of an older or younger son. See Difference (Her.).
Source: Webster’s Unabridged Dictionary 1913 Edition