metastable
/ˌmetəˈsteɪbl/adjective
1- Physics (of a state of equilibrium) stable provided it is subjected to no more than small disturbances【物理】（平衡状态）亚稳的, 准稳的。
1.1
- (of a substance or particle) theoretically unstable but so long-lived as to be stable for practical purposes（物质, 粒子）亚稳的, 准稳的。
派生词