411 REFERENCE · Wiktionary
HHD
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
hhd.
English
Noun
~
en computing en hybrid hard drive.
en medicine en home hemodialysis.
en medicine en hiatus hernia diafragmatica.
en military en headquarters and headquarters company.
Proper noun
en w:Helena Historic District.