Adjective
Initialism of human-to-human.
Epidemiologists worry about H2H transmission of avian influenza.
Initialism of head-to-head.
Source: en.wiktionary.orgUsing this provision, GECOM insisted that it was vital to ensure that persons who would have had changes done to their addresses during the H2H exercise, were in accordance with the law and did not fall outside of the statutory period. Source: Internet