| Noun | 1. | genus Macrozamia - genus of large evergreen Australian cycads; sometimes classified in family Cycadaceae gymnosperm genus - a genus of gymnosperms family Zamiaceae, zamia family, Zamiaceae - a family of cycads often included in the family Cycadaceae: zamias macrozamia - any treelike cycad of the genus Macrozamia having erect trunks and pinnate leaves and large cones with sometimes edible nuts; Australia burrawong, Macrozamia communis, Macrozamia spiralis - large attractive palmlike evergreen cycad of New South Wales |