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delta medical definition
noun
- Symbol δ, Δ The fourth letter of the Greek alphabet.
- The fourth one in a series.
- A surface or part that resembles a triangle, such as the terminus of a pattern in a fingerprint or the shape of a muscle.
- Of or characterizing the atom or radical group that is fourth in position from the functional group of atoms in an organic molecule.
- Of or relating to one of four closely related chemical substances.
- Relating to or characterizing a polypeptide chain that is one of five types of heavy chains present in immunoglobins.
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