Pronunciation: /ˈsəːkjʊlərʌɪz/
(also circularise)
verb
[with object]-
1distribute a large number of letters or leaflets to (a group of people) in order to advertise something or canvas opinion: they circularize prospective purchasers at regular intervals
-
2 Biochemistry make (a stretch of DNA) into a circular loop.

Derivatives
-
Pronunciation: /-ˈzeɪʃ(ə)n/
noun