1. An operating system developed by Bill Gates for personal computers
   - MS-DOS

Type of: disk operating system, DOS

• preventative
• preventer
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• preventive attack
• preventive medicine
• preventive strike
• preview
• previous
• previous question
• previously
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• prevision
• prevue
• prewar
• prexy
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• prezzie
• Priacanthidae
• Priacanthus
• Priacanthus arenatus
• Priam
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• priapism
• Priapus