fluorene
/ˈflʊəriːn/ /ˈflɔːriːn/Chemistry
noun
A crystalline tricyclic aromatic hydrocarbon obtained from coal tar and used as a precursor for dyes, pigments, and pharmaceuticals.
- Fluorene consists of two benzene rings fused to a cyclopentane ring. Systematic name: o-biphenylenemethane; C13H10..
Origin
Mid 19th century; earliest use found in American Journal of Science. From fluoro- + -ene, after French fluorène, named for the violet fluorescence of its crystals.
- put it (or oneself) about
- put it there
- put lipstick on a pig
- putlock
- putlog
- putlog hole
- put money (or put one's money) on
- puto
- put-off
- put off the evil day (or hour)
- put-on
- put one over on
- put one's affairs in order
- put one's back into
- put one's best foot forward
- put oneself in another's place
- put one's face on
- put one's feet up
- put one's finger in the dyke
- put one's finger on something
- put one's foot down
- put one's foot in it (or put one's foot in one's mouth)
- put one's hand in one's pocket
- put one's hands together
- put one's hands up