Simultaneous interpreting (Topical Term)

Canadian General Standards Board. Permanent simultaneous interpretation systems (physical facilities), 1988.

Britannica Online ("Language: Translation: Before the invention and diffusion of writing, translating was instantaneous and oral; persons professionally specializing in such work were called interpreters. In predominantly or wholly literate communities, translation is thought of as the conversion of a written text in one language into a written text in another, though the modern emergence of the simultaneous translator or professional interpreter at international conferences keeps the oral side of translation very much alive.")

Simultaneo website, an Italian translation/interpretation company ("simultaneous translation, meaning exactly what the word implies: an immediate translation. The interpreter speaks as the speaker does, without pausing.)