simultaneous

From Medieval Latin simultaneus, from simultim (“at the same time, extended”), from Latin simul (“together, at the same time”); compare similar.

• (UK) IPA^(key): /sɪm.əlˈteɪ̯n.i.əs/
• (US) IPA^(key): /ˌsaɪ̯m.əlˈteɪ̯n.i.əs/

• Audio (US)

  (file)

• Rhymes: -eɪniəs
• Rhymes: -eɪnɪəs

simultaneous (not comparable)

1. Occurring or transpiring at the same moment.
   • 1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, New York, N.Y.: Columbia University Press, →ISBN, page 3-4:

     As with the Lejeuneaceae, this pattern of massive speciation appears to be correlated with the Cretaceous explosion of the angiosperms and the simultaneous creation of a host of new microenvironments, differing in humidity, light intensity, texture, etc.

2. (mathematics, of a set of equations) To be solved for the same values of variables.

• (happening at the same moment): sequential

• simultaneously
• simultaneity
• simultaneous interpretation / simultaneous interpreting