English

semilanguage

From semi- + language.

Proto-Indo-European *sem- ‘one’

Proto-Indo-European *sēmi ‘half’

English semi-

Proto-Indo-European *dn̥ǵʰwéh₂s ‘tongue, speech, language’

…

Latin lingua ‘tongue, speech, language’

Vulgar Latin *linguāticum

Old French language

Middle English langage ‘language’

Today it means

noun A set of semiwords.

Language periods are conventional ranges, not dates for this word.

Etymograph / semilanguage