Habitat is the environment in which natural or human species live. And the defined area in the where organism exists, such as water lilies can only be found in aqueous conditions or reindeer on tundra and mountains
Halos are CFC (other greenhouse gases halocarbon) used, for instance, in firefighting equipment.
Hand or handle is how the fabric feels. It is a very subjective judgment of the feel of a material, and it should help decide if a fabric is suitable for a specific end-use.
Hard fibre is a term used to describe a group of fibres made from leaf and fruit monocotyledonous plants (vegetable fibres) obtained from the supporting tissue of large leaves from tropical, sub-tropical plants.
The harness is the frame holding huddles that have to warp yarns threaded through its eyes.
Hazardous Substances (RoHS) is an EU directive to limit the use of dangerous substances in electrical and electronic equipment and at the same time promote the recycling and or re-use of such products.
Hazardous waste, or combination of scraps, that may cause or significantly contribute to an increase in mortality or an increase in serious irreversible or incapacitating illness or that poses a substantial present or potential hazard to human health or the environment.