Sequoia \Se*quoi"a\, n. [NL. So called by Dr. Endlicher in honor of Sequoyah, who invented the Cherokee alphabet.] (Bot.) A genus of coniferous trees, consisting of two species, {Sequoia Washingtoniana}, syn. {Sequoia gigantea}, the "big tree" of California, and {Sequoia sempervirens}, the redwood, both of which attain an immense height. [1913 Webster]