HDD | |
abbr. | Heating Degree Days; Heavy Duty Dry; Howard Dwaine Dorough |
abbr. comp. IT | High Density Disk |
abbr. dentist. | horizontal defect dimension |
abbr. mil. | Hard Disk Drive; Hardware Design Document |
abbr. sport. | Hits Daily Double |
abbr. transp. | Heavy Duty Diesel |
airports avia. | Hyderabad, Pakistan |
RIG | |
abbr. mil. | recognition identification group |