heavy flow of water

automatic heavy barrel rifle / heavy barrel automatic rifle

heavy-armored (heavy armoured)

heavy-weight torpedo / heavy weight torpedo (HWT)

heavy water

gas-cooled heavy water-moderated reactor

heavy water analyzer

heavy water moderated reactor

heavy water plant

heavy-water

heavy-water pile

heavy-water reactor

water jacket plug / water-jacket plug

aircraft-carrying heavy cruiser

heavy armament

heavy assault rifle

heavy atom bomb

heavy bomber

Heavy Bomber Aviation Regiment (HBAR)

heavy cannon

heavy cruiser

heavy defense

heavy drop resupply

heavy engineer construction equipment

heavy expanded mobility tactical truck (HEMTT)

heavy flamethrower system (TOS)

heavy force vehicle

heavy ground

heavy hydrogen

heavy lift capability

Heavy Lift Challenge / Capability (HLC, the Framework)

heavy machine gun (HMG)

heavy maintenance/repair