noun. 1  a piece of glass or other transparent material, used to converge or diverge transmitted light and form optical images. 2  Also called : : compound lens a combination of such lenses for forming images or concentrating a beam of light.3  a device that diverges or converges a beam of electromagnetic radiation, sound, or particles. ( 4 anatomy) See .... a piece of glass or other transparent material, used to converge or diverge transmitted light and form optical images. 2  Also called : : compound lens a combination of such lenses for forming images or concentrating a beam of light.
Shop Products. This flag of Honduras was adopted on January 9, 1866. The flag contains three equal horizontal bands; the two blue bands represent the Pacific Ocean and the Caribbean Sea. The five blue five-pointed stars arranged in an X pattern centered in the white band represent the five nations of the former United States of Central America.
El Salvador Flag: The flag of El Salvador was officially adopted on May 17, 1912. The blue and white are the original colors used by the United Provinces of Central America after they gained their independence from Spain in 1823.The centered emblem is surrounded by the five flags of the United Provinces.hey symbolize the five member states of the United Provinces of Central America. Above the volcanoes is a red Phrygian cap on a staff before a golden sun and the date of 15 September, 1821, Independence Day of El Salvador.