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|Noun||1.||genus Sequoiadendron - giant sequoias; sometimes included in the genus Sequoia; until recently placed in the Taxodiaceae|
big tree, giant sequoia, Sequoia gigantea, Sequoia Wellingtonia, Sequoiadendron giganteum, Sierra redwood - extremely lofty evergreen of southern end of western foothills of Sierra Nevada in California; largest living organism
plant genus - a genus of plants