- macadamia (n.)
- Australian evergreen tree, 1904, from Modern Latin (1858), named for Scotland-born chemist Dr. John Macadam (1827-1865), secretary of the Victoria Philosophical Institute, Australia, + abstract noun ending -ia.
- macadamization (n.)
- 1826, noun of action from macadamize.
- macadamize (v.)
- 1825 (implied in macadamized), from macadam + -ize. In early use also mcadamize. Related: Macadamizing. Also macadamise, macadamised.