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."
In astrophysics, chemically peculiar stars are stars with distinctly unusual metal abundances, at least in their surface layers.
The word base of Esperanto was originally defined in Unua Libro, published by L. L. Zamenhof in 1887. It contained around 900 root words. The rules of the language allow speakers to borrow words as needed, recommending only that they look for the most international words, and that they borrow one basic word and derive others from it, rather than borrowing many words with related meanings. In 1894, Zamenhof published the first Esperanto dictionary, Universala vortaro, which was written in five languages and supplied a larger set of root words.
108 Aquarii is a star in the equatorial constellation of Aquarius. 108 Aquarii is the Flamsteed designation, although it also bears the Bayer designation i3 Aquarii and the variable star designation ET Aquarii. It has an apparent visual magnitude of 5.194 and can be seen with the naked eye under suitably dark skies. Based upon an annual parallax shift of 10.23, the distance to this star is 319 light-years.
Humphrey R. Tonkin is professor of English, and served as the 4th president of the University of Hartford. He is also a dedicated Esperantist.
Helmar Gunter Frank was a German mathematician and pedagogist. He was among the first scientists to apply mathematical methods in teaching and psychology. He established a method to measure intelligence on an absolute and homogeneous scale rather than by comparison between individuals.
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.
Like natural languages, the constructed language Esperanto contains profane words and indecent vocabulary. Some of this was formulated out of the established core vocabulary, or by giving specific profane or indecent senses to regularly formed Esperanto words. Other instances represent informal neologisms that remain technically outside the defined vocabulary of the language, but have become established by usage.
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.
Michel Duc Goninaz was a French Esperantist known worldwide for his 2002 revision of La Plena Ilustrita Vortaro de Esperanto.
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.
Wim De Smet was a Flemish zoologist, specialized in marine mammals, and an esperantist. He published a lot of scientific and popularizing articles in Dutch, English, French and Esperanto. He projected an entirely new system for the naming and classification of animals and plants.
11 Orionis is a solitary Ap star in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked eye with an apparent visual magnitude of 4.65, and it is located approximately 365 light years away from the Sun based on parallax. The star is moving further from the Sun with a heliocentric radial velocity of +16.8 km/s.
Claus Killing-Günkel, in Esperanto also known as Nikolao Günkel, is a German teacher and interlinguist.
Grégoire Maertens is a West-Flemish Esperantist who was a member of the Estraro for the UEA from 1977 until 1992. From 1980 until 1986 he was president of the UEA, and an honorary member from 1993 onwards.
Xi Phoenicis, Latinized from ξ Phoenicis, is a visual binary star system in the southern constellation of Phoenix. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.70. Based upon an annual parallax shift of 14.61 mas as measured from Earth, it is located around 223 light years from the Sun. The system is moving away from the Sun with a radial velocity of about +10 km/s.
The following outline is provided as an overview of and topical guide to Esperanto:
