ˌklavələ̇ˈzāshən noun
( -s )
Etymology: French clavelisation, from claveliser to clavelize (inoculate with sheep virus) (from clavelée sheep pox, from Middle French, from clavel, from Late Latin clavellus nail-shaped pustule, diminutive of Latin clavus nail) + -ation — more at clavus
: inoculation with virus from sheep pox : ovination