Here, according to Dr. Rabovsky, are eight causes of a metallic taste in your mouth. Poor oral hygiene â If you donât brush and floss regularly, the result can be teeth and gum problems such as gingivitis, periodontitis and tooth infection. These infections can be cleared up with a prescription from your dentist.
Noun. 1. delta-a low triangular area of alluvial deposits where a river divides before entering a larger body of water; the Mississippi River delta; the Nile delta. alluvial deposit, alluvial sediment, alluvium, alluvion-clay or silt or gravel carried by rushing streams and deposited where the stream slows down.
Delta commonly refers to: 1  Delta (letter) (Î´ or Î´), a letter of the Greek alphabet. 2  D (letter), called Delta in the NATO phonetic alphabet. 3  Delta Air Lines, a American airline Delta Connection, a regional airline brand name for Delta Air Lines.  River delta, a landform at the mouth of a river.