Where does “Interlingua” come from?

Interlingua (English) comes from Latin lingua, from Latin -ula, from Proto-Indo-European -tlom, from Proto-Indo-European -trom, from Proto-Indo-European -tḗr — Derives agent nouns from verbs, denoting someone...

Interlingua (English): A constructed interlanguage based on Romance languages, English, German, Russian and Latin, developed by the International Auxiliary Language Association, and first published in 1951

Definitions

  1. A constructed interlanguage based on Romance languages, English, German, Russian and Latin, developed by the International Auxiliary Language Association, and first published in 1951

Ancestry of “Interlingua”, step by step

Interlingua traces back through two separate lines of ancestry.

via Latin lingua

StepLanguageWordMeaning
1Latinlinguatongue; a speech; an utterance or expression
2Latin-ularegō + API → rēgula; tegō + API → tēgula;...
3Proto-Indo-European-tlomAlternative form of *-trom
4Proto-Indo-European-tromForms nouns denoting a tool or instrument
5Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via Latin inter

StepLanguageWordMeaning
1Latininterbetween, among; during, while
2Proto-Indo-Europeanh₁entérbetween
3Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European -tḗrEvery word from Latin -ulaEvery word from Latin lingua