Galeopsis tetrahit
— Noun
– English
~ coarse bristly Eurasian plant with white or reddish flowers and foliage resembling that of a nettle; common as a weed in United States
genus Tetrahymena
— Noun
– English
~ protozoa having four membranous ciliary organelles
genus Tetraneuris
— Noun
– English
~ genus of hairy yellow-flowered plants of the western United States
genus Tetrao
— Noun
– English
~ type genus of the Tetraonidae: capercaillies
genus Teucrium
— Noun
– English
~ large widely distributed genus of perennial herbs or shrubs or subshrubs; native to Mediterranean region to western Asia