DOS, disk operating system
(noun) an operating system that is on a disk
Source: WordNet® 3.1
DOS
(computing) Acronym of Disk Operating System, especially: a collective term for disk(ette)-based operating systems (PC-DOS, MS-DOS, DR-DOS, Novell DOS, FreeDOS) available for IBM and IBM-compatible personal computers from the early 1980's, although the term was used before then to refer to any disk-based operating system (such as the Data General "Diskette Operating System" for their minicomputers, or for the TRS-80 DOS used when the computer was upgraded from cassette data storage to diskette).
(US) Initialism of Department of State.
DOS (plural DOSes)
(military) Initialism of date of service.
(military) Initialism of date of separation.
(sciences) Initialism of density of states.
(education) Initialism of director of studies.
• DSO, OD's, ODS, OSD, SDO, SOD, SoD, dso, ods, sod
DoS (plural DoSs or DoSes)
(computing, Internet) A denial-of-service attack.
DoS (third-person singular simple present DoSes, present participle DoSing, simple past and past participle DoSed)
(transitive, computing, Internet) To commit a denial-of-service attack against.
DoS
(teaching) Director of Studies; someone in charge of the academic side of a school including training teachers and deciding course materials.
• DSO, OD's, ODS, OSD, SDO, SOD, SoD, dso, ods, sod
dos
plural of do
• DSO, OD's, ODS, OSD, SDO, SOD, SoD, dso, ods, sod
Source: Wiktionary
3 March 2025
(verb) hold one’s ground; maintain a position; be steadfast or upright; “I am standing my ground and won’t give in!”
The earliest credible evidence of coffee-drinking as the modern beverage appeared in modern-day Yemen. In the middle of the 15th century in Sufi shrines where coffee seeds were first roasted and brewed for drinking. The Yemenis procured the coffee beans from the Ethiopian Highlands.
