Esperanto is the world's most widely spoken constructed international auxiliary language. Created by Polish ophthalmologist L. L. Zamenhof in 1887, it was intended to be a universal second language for international communication. Zamenhof first described the language in Dr. Esperanto's International Language, which he published in five languages under the pseudonym "Doktoro Esperanto." He claimed that the grammar of the language could be learned in one hour, though this estimate assumed a learner with a background in European languages. The word esperanto translates into English as "one who hopes."
Esperantujo or Esperantio is the Esperanto community; the community of speakers of the Esperanto language and their culture, as well as the places and institutions where the language is used. The term is used "as if it were a country."
The World Esperanto Youth Organization is an organization dedicated to supporting young Esperanto speakers around the world and promote the use of Esperanto. TEJO was founded in 1938 as the Tutmonda Junular-Organizo and took its current name in 1952. In 1956, TEJO became the youth section of the Universal Esperanto Association (UEA). In 1971, the finances and administration of TEJO were fully integrated into those of UEA.
The Universal Esperanto Association, also known as the World Esperanto Association, is the largest international organization of Esperanto speakers, with 5501 individual members in 121 countries and 9215 through national associations and in official relations with the United Nations. In addition to individual members, 70 national Esperanto organizations are affiliated with UEA. Its current president is the professor Duncan Charters. The magazine Esperanto is the main organ used by UEA to inform its members about everything happening in the Esperanto community.
ISO 639-1:2002, Codes for the representation of names of languages—Part 1: Alpha-2 code, is the first part of the ISO 639 series of international standards for language codes. Part 1 covers the registration of two-letter codes. There are 184 two-letter codes registered as of December 2018. The registered codes cover the world's major languages.
Terminology is a general word for the group of specialized words or meanings relating to a particular field, and also the study of such terms and their use. This is also known as terminology science. Terms are words and compound words or multi-word expressions that in specific contexts are given specific meanings—these may deviate from the meanings the same words have in other contexts and in everyday language. Terminology is a discipline that studies, among other things, the development of such terms and their interrelationships within a specialized domain. Terminology differs from lexicography, as it involves the study of concepts, conceptual systems and their labels (terms), whereas lexicography studies words and their meanings.
The Baháʼí Esperanto League (BEL) is the official organization of Baháʼís who are Esperantists. It was founded on 19 March 1973 with the approval of the Universal House of Justice.
Rüdiger Eichholz, was a Canadian physicist and Esperantist and a member of the Esperanto Academy. He is best known for publishing the "Esperanto picture dictionary" (1988) and a massive anthology co-edited with his wife, Esperanto in the Modern World (1982).
Montagu Christie Butler was a British academic, librarian, lexicographer, musician, and Esperantist. A winner of several prizes at the Royal Academy of Music in London, he was a harpist and a versatile music teacher skilled in playing various musical instruments, as well as a teacher of voice and of musical composition.
The International Esperanto League was for 11 years the largest and most important neutral Esperanto federation, reuniting in 1947 with the Universal Esperanto Association from which it had broken away in 1936.
Detlev Blanke was a German Esperantist. He was an interlinguistics lecturer at the Humboldt University of Berlin. He was one of Germany's most active Esperanto philologists and was from 1991 to 2016 both the chair of the Gesellschaft für Interlinguistik and the editor of its newsletter, Interlinguistische Informationen. He and his wife, Wera Blanke, were especially interested in the evolution of language, particularly in the development of terminology for the constructed language, Esperanto, and questions of sociolinguistics. Blanke made a study of Eugen Wüster's work toward common international terminology and international standardization.
Gaku Konishi was a Japanese physics professor at Kwansei Gakuin University and Esperantist.
Eugen Wüster was an industrialist and terminologist.
The International Information Centre for Terminology (Infoterm) was founded in 1971 by UNESCO. Its goal is "to support and co-ordinate international co-operation in the field of terminology." Infoterm members are national, international and regional institutions, organizations, networks and specialized public, semi-public or other non-profit institutions engaged in devising and standardizing terminology. Members are drawn from Africa, the Americas, Asia and Europe.
Hans Michael Maitzen is an Austrian astronomer.
The World Esperantist Vegetarian Association is a voluntary association of Esperanto-speaking vegetarians. Founded in 1908, the group's working language is Esperanto, and it is the oldest international organization of vegetarians that is currently active. TEVA published a journal, Vegetarano ("Vegetarian") from 1914 to 1932, revived in 2009 as Esperantista Vegetarano, and has also operated a spirited Internet mailing list through Yahoo! Groups since 2005.
The following outline is provided as an overview of and topical guide to Esperanto:
The Esperanto League of Bosnia and Herzegovina is the national Esperanto association in Bosnia and Herzegovina, which represents Esperanto speakers, Esperanto societies, and friends. Since its establishment in 1910, it helps advancement of Esperanto language learning and usage in Bosnia and Herzegovina.
Julia Catharina Isbrücker-Dirksen was a Dutch esperantist, Honorary Member of the Universal Esperanto Association (UEA), member of the International Central Committee and of the examination committee, member of the Soroptimist Club, president of the group in The Hague and wife of the vice-president of UEA Johannes Rijk Gerardus Isbrücker.