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

• fern palm
• fern rhapis
• fern seed
• Fernand Leger
• Fernao Magalhaes
• ferned
• fernless
• fernlike
• ferny
• Ferocactus
• ferocious
• ferociously
• ferociousness
• ferocity
• Ferrara
• ferret
• ferret badger
• ferret out
• ferret-sized
• ferriage
• ferric
• ferric oxide
• ferricyanic acid
• ferricyanide
• ferriferous