The founder of an institute for stenography, he was active in the international auxiliary language movement, supporting various projects throughout his life, including Volapük, Esperanto, Idiom Neutral, and Occidental.
He first joined the Volapük movement, although he left it for Esperanto in 1890, teaching courses about the language in Ghent and Brussels.
In 1907, Meysmans became the leader of the Brussels-based Groupe de la Langue Internationale, an organisation that supported Idiom Neutral (a more niche language created in 1902 by Waldemar Rosenberger).
Indeed, Meysmans praised them in his contributions to Peano's journal Discussiones, which existed to support the Academia pro Interlingua.
[2] In 1912, he was leader of the Ventimiglia-based group Unione pro Latino Internationale;[7] a year later, Meysmans became the chair of the Academia.