A heterocyclic compound having three fused rings with one oxygen atom, C13H10O; m.p. 101–102°C b.p. 310–312°C. The ring structure is present in a class of xanthene dyes.
Xanthene
- rainforest
- rain-gauge
- rain-making
- rain print
- rain shadow
- rain-shadow
- rain-splash
- rainsplash
- rain-wash
- Rainwater, (Leo) James
- raised beach
- raised bog
- raised cosine window
- raise(to a power)
- Rajagopalachariar, Chakravarti (1878–1972)
- Rajput
- rake
- Raketoplan
- raking
- Rakosi, Matyas (1892–1971)
- RAL
- Raleigh, Sir Walter (1552–1618)
- RAM
- r.a.m.
- Ramachandran plot