luminescence /ˌluːməˈnɛsn̩s/ noun Learner's definition of LUMINESCENCE
[noncount] technical
: the creation of light by processes that do not involve heat
also : the light created发冷光；冷光；荧光 — luminescent
/ˌluːməˈnɛsn̩t/ adjective [more luminescent; most luminescent]