Dirac
biographical name
Di·rac di-ˈrak 
Paul Adrien Maurice 1902–1984 English physicist
- tree of heaven
- tree of Jesse
- tree of life
- tree of Porphyry
- tree onion
- tree orchid
- tree oyster
- tree partridge
- tree peony
- tree pie
- tree pipit
- tree planting
- tree poppy
- tree porcupine
- tree primrose
- tree rat
- tree ring
- tree root rot
- tree rose
- tree runner
- tree shrew
- tree sparrow
- tree spirit
- tree squirrel
- tree steppe