单词很忙

n. 希腊字母表的第3个字母；丙，γ项；（论文、成绩等）γ等，丙等；γ星（星座中第三颗星）；γ射线；伽马（磁场强度单位）

n. （Gamma）（美）贾马（人名）

gamma 希腊字母表的第三个字母

来自希腊字母G的发音。

third letter of the Greek alphabet, c. 14, from Greek gamma, from Phoenician gimel, said to mean literally "camel" (see camel) and to be so called for a fancied resemblance of its shape to some part of a camel. Gamma rays (193) originally were thought to be a third type of radiation, but later were found to be very short X-rays.