Definitions for "HAZ"
Heat Affected Zone. That portion of the base metal that has not been melted but whose microstructure or mechanical properties have been altered by the heat of welding, brazing, soldering, forming, or cutting.
Heat effected zone
Health Action Zones (HAZ) are partnerships between the NHS, local authorities, the voluntary and private sectors and local communities which represent a new approach to public health, linking health, regeneration, employment, education, housing and anti-poverty initiatives to respond to the needs of vulnerable groups and deprived communities.
Harry 'Haz' Hulme (born July 9, 1987 in Stockport, England) is a popular internet columnist and physics undergraduate. He is best known for his weekly column on the mountain biking website, Jamssite.