1. Duration of service
   - longevity

Type of: longness

• midst
• midstream
• midsummer
• Midsummer Day
• Midsummer Eve
• midsummer madness
• Midsummer Night
• Midsummer's Day
• midsummer-men
• midterm
• midterm exam
• midterm examination
• midtown
• midvein
• midwatch
• midway
• Midway Islands
• midweek
• midweekly
• Midwest
• midwestern
• midwestern United States
• midwife
• midwife toad
• midwifery