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envelope (EN)
nom

nom “envelope”

singular envelope, plural envelopes
  1. sobre
    She wrote a letter to her friend, placed it in an envelope, and mailed it the next day.
  2. una capa o coberta que envolta o tanca alguna cosa
    The spacecraft heated up as it passed through the envelope of Earth's atmosphere during re-entry.
  3. la part en forma de globus d'un dirigible o globus aerostàtic que conté el gas
    They carefully folded the hot air balloon's envelope after landing.
  4. (enginyeria) el rang de capacitats o límits de rendiment d'un sistema o dispositiu
    The new engine design extends the performance envelope of the car, allowing it to reach higher speeds safely.
  5. (electrònica) una corba que mostra com l'amplitud d'un senyal canvia al llarg del temps
    The engineer studied the signal's envelope on the oscilloscope to diagnose the issue.
  6. (música) la manera com la sonoritat o el to d'un so canvia al llarg del temps des que comença fins que s'atura
    The musician adjusted the envelope of the synthesizer, altering how each note began and faded away.
  7. (mathemàtiques) una corba o superfície que és tangent a cadascuna d'una família de corbes o superfícies
    In calculus class, they learned how to find the envelope of a set of lines, which represents their common tangents.
  8. (biologia) una membrana o capa que envolta un òrgan, cèl·lula o virus
    The virus's outer envelope allows it to attach to and enter host cells.
  9. (astronomia) un núvol de gas que envolta una estrella o un cometa
    The comet's bright envelope became visible through the telescope as it approached the sun.
  10. (informàtica) informació afegida a un missatge que ajuda en el seu lliurament però que no forma part del missatge en si mateix
    The email server reads the envelope of the message to determine where to deliver it.