Noun
(biology) Initialism of koi herpes virus.
(Internet slang, 4chan) Initialism of kissless hugless virgin or kissless handholdless virgin.
Source: en.wiktionary.orgTwo of the biggest health concerns among koi breeders are the koi herpes virus (KHV) and rhabdovirus carpio, which causes spring viraemia of carp (SVC). Source: Internet
Some koi farms in Israel use the KV3 vaccine, developed by Prof. M. Kotler from the Hebrew University and produced by Kovax, to immunise fish against KHV. Source: Internet