| delta | the 4th letter of the Greek alphabet |
|---|---|
| delta | a low triangular area where a river divides before entering a larger body of water |
| delta | a severe form of hepatitis |
| delta | an allotrope of iron that is stable between 1403 degrees centigrade and the melting point (= 1532 degrees) |
| delta | an electron ejected from matter by ionizing radiation |
| delta | the normal brainwave in the encephalogram of a person in deep dreamless sleep |
| delta | the normal brainwave in the encephalogram of a person in deep dreamless sleep |
| delta | a dehydrogenated analogue of cortisol (trade names Orasone or Deltasone or Liquid Pred or Meticorten) |