Myrtaceous \Myr*ta"ceous\, a. [L. myrtaceus.] (Bot.)
Of, pertaining to, or resembling, a large and important
natural family of trees and shrubs ({Myrtaceae} of the order
{Myrtales}), of which the myrtle ({Myrtus}) is the type. It
includes the genera {Eucalyptus}, {Pimenta}, {Lechythis}, and
about seventy more.
[1913 Webster]