Main Entry: phos·phor

Pronunciation: \ˈfäs-fər, -ˌfȯ(ə)r\

Variant(s): also phos·phore \-ˌfō(ə)r, -ˌfȯ(ə)r, -fər\

Function: noun

: a phosphorescent substance ; specifically : a substance that emits light when excited by radiation