freedom from doubt, especially in matters of faith or opinion; certainty.
early 15c., from Middle French certitude “certainty” (16c.), from Late Latin certitudinem (nominative certitudo) “that which is certain,” from Latin certus “sure, certain” (see certain).
a technique of inlaying light-colored material, as bone, ivory, metal, or pale wood, in elaborate designs on a dark ground.
deep blue; sky blue; azure. Heraldry. a sky-blue tincture, used especially on the Continent. noun a deep blue colour; azure (as adjective): a cerulean sea adj. 1660s, with -an + Latin caeruleus “blue, dark blue, blue-green,” perhaps dissimilated from caelulum, diminutive of caelum “heaven, sky,” of uncertain origin (see celestial). The Latin word was applied […]
a light-blue to strong greenish-blue color. a pigment used in painting consisting mainly of oxides of tin and cobalt, chiefly characterized by its greenish-blue color and permanence.
a North American wood warbler, Dendroica cerulea, the male of which is blue above and white below.