Proto-Esperanto (Esperanto: Pra-Esperanto) is the modern term for any of the stages in the evolution of L. L. Zamenhof's language project, prior to the...

Native Esperanto speakers (Esperanto: denaskuloj or denaskaj esperantistoj) are people who have acquired Esperanto as one of their native languages. As...

Esperanto is written in a Latin-script alphabet of twenty-eight letters, with upper and lower case. This is supplemented by punctuation marks and by various...

language in Dr. Esperanto's International Language (Esperanto: Unua Libro), which he published under the pseudonym Doktoro Esperanto. Early adopters of...

The Esperanto movement, less commonly referred to as Esperantism (Esperanto: Esperantismo), is a movement to disseminate the use of the planned international...

The original word base of Esperanto contained around 900 root words and was defined in Unua Libro ("First Book"), published by L. L. Zamenhof in 1887...

Esperanto symbols, primarily the Esperanto flag, have seen much consistency over the time of Esperanto's existence (namely in the consistent usage of the...

Esperanto culture refers to the shared cultural experience of the Esperantujo, or Esperanto-speaking community. Despite being a constructed language,...

The Universal Esperanto Association (Esperanto: Universala Esperanto-Asocio, UEA), also known as the World Esperanto Association, is the largest international...

The Akademio de Esperanto (AdE; English: Academy of Esperanto) is an independent body of Esperanto speakers who steward the evolution of said language...