1. (of a body of water) being deficient in plant nutrients, such as nitrogen or phosphorus 
2. (of a diet) being deficient in nutrition

Encyclopedia: Oligotrophic

• Mahdi
• Mahdism
• Mahdist
• Mahernia verticillata
• Mahgrib
• Mahican
• mahimahi
• mahjong
• Mahler
• mahlstick
• mahoe
• mahogany
• mahogany family
• mahogany tree
• mahogany-red
• Mahomet
• Mahonia
• Mahonia aquifolium
• Mahonia nervosa
• Mahound
• mahout
• Mahratta
• Mahratti
• mahuang
• Maia