I had the same question. I clicked on their menu About > Who is SMPTE page and it didn't define the acronym either. Then I scrolled to the bottom of the page a

I had the same question. I clicked on their menu About > Who is SMPTE page and it didn't define the acronym either. Then I scrolled to the bottom of the page and I did see it in the footer: SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS Today I learned