"in the matter of, in the (legal) case of," c. 1600, probably from Duns Scotus; Latin, from re, ablative of res "property, goods; matter, thing, affair," from Proto-Italic *re-, from PIE *reh-i- "wealth, goods" (source also of Sanskrit rayi- "property, goods," Avestan raii-i- "wealth").
in fieri
in forma pauperis
in loco parentis
in medias res
in memoriam
in re
in situ
in totidem verbis
in toto
in utero
in vitro
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