gamma

Từ điển American Heritage Dictionary 4th

gam·ma (gămʹə)n.
1. The third letter of the Greek alphabet. See table at alphabet.
2. The third item in a series or system of classification.
3. A unit of magnetic intensity equal to one hundred thousandth (10-⁵) of an oersted.
4. A unit of mass equal to one millionth (10-⁶) of a gram.
5. Chemistry. The third position from a designated carbon atom in an organic molecule at which an atom or a radical may be substituted. [Middle English, from Greek, of Phoenician origin. See gml² in Semitic Roots.]

• Từ đồng nghĩa / Synonyms:
  da Gamma, Vasco da Gamma, Gamma