1. In response to an unforeseen need
   "a spur-of-the-moment party"

See also: unprepared

• genus Melogale
• genus Melolontha
• genus Melophagus
• genus Melopsittacus
• genus Melospiza
• genus Melursus
• genus Menippe
• genus Meniscium
• genus Menispermum
• genus Menopon
• genus Mentha
• genus Menticirrhus
• genus Mentzelia
• genus Menura
• genus Menyanthes
• genus Menziesia
• genus Mephitis
• genus Mercenaria
• genus Mercurialis
• genus Mergus
• genus Meriones
• genus Merlangus
• genus Merluccius
• genus Merops
• genus Mertensia