(of a proposition) asserting that the existence or occurrence of one thing or event depends on, and is dependent on, the existence or occurrence of another, as “A if and only if B.”.
another name for equivalence (sense 2)
an object shaped like two cones with their bases together.
of, on, or involving two continents: a bicontinental survey.
convex on both sides, as a lens. Historical Examples McClure’s Magazine, Vol. VI., No. 6, May, 1896 Various Curiosities of Light and Sight Shelford Bidwell The Works of Francis Maitland Balfour, Volume II (of 4) Francis Maitland Balfour The Vertebrate Skeleton Sidney H. Reynolds The Appendages, Anatomy, and Relationships of Trilobites Percy Edward Raymond A […]
Botany, Zoology. having two horns or hornlike parts. shaped like a crescent. bicorne. (in early French and English literature) a mythical animal, usually depicted as a grotesquely fat beast, that existed solely by devouring virtuous husbands. a two-cornered cocked hat worn especially in the 18th and early 19th centuries. a two-horned animal. Historical Examples Shaman […]