fluorene

About 0.03 uses per million words.

Meaning

1. noun A polycyclic aromatic hydrocarbon consisting of two benzene rings joined together directly, and also via a methylene bridge; it is used in light-emitting diodes.

Similar words

fluorenone benzofluorene polyfluorene oligofluorene fluorenyl fluorenol fluorenylidene terfluorene dioctylfluorene benzofluoranthene

Often followed by

and in derivatives ring units phenanthrene by is moiety