Noun
(finance, uncountable) A third-order measure of derivative price sensitivity, expressed as the rate of change of gamma with respect to time, or equivalently the rate of change of charm with respect to changes in the underlying asset price.
(physics, countable) A nuclear reaction with the emission of a gamma ray.
Source: en.wiktionary.orgAfter one of these decays the resultant nucleus may be left in an excited state, and in this case it decays to its ground state by emitting high energy photons (gamma decay). Source: Internet
It has been reported experimentally by direct observation that the half-life of 180m Ta to gamma decay must be more than 10 15 years. Source: Internet
Thus, gamma decay usually follows alpha or beta decay. Source: Internet