Deutsch: Klimaanlage / Español: Climatización / Português: AVAC / Français: Chauffage, ventilation et climatisation / Italiano: HVAC

HVAC (heating, ventilation, and air conditioning) is the technology of indoor and vehicular environmental comfort. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. 

Hunting means pursuing, capturing, catching, killing, gigging, trapping, shooting or attempting to pursue, capture, catch, kill, gig, trap or shoot, or in any manner take any bird or mammal into personal possession.

Hydrofluoric acid is a highly toxic, highly corrosive, color less, fuming liquid found in many aluminum cleaners.

Halide pertains to a chemical compound of a halogen with a more electropositive element or group.

A Hair-slide a British term referring to a decorative hinged clip that girls and women put in their hair to hold it in place.

Hide is defined as the whole pelt from large animals (cattle, horse, etc.), in contrast to the term "skin", the pelt of young or small animals.

Honey is characterized as sweet viscid material produced by bees from the nectar of flowers, composed largely of a mixture of dextrose and levulose dissolved in about 17 percent water; contains small amounts of sucrose, mineral matter, vitamins, proteins, and enzymes.

Household is a term that includes all the people who occupy a housing unit as their usual place of residence.