Definition of periodograph in English:

periodograph

noun

  • 1A periodogram; (originally) specifically a curve drawn in a periodogram. Now disused.

  • 2An instrument for automatically making a periodogram analysis or Fourier analysis of a curve by optical means.

Origin

Late 19th century. From period + -o- + -graph. Compare slightly earlier periodogram.

Pronunciation

periodograph

/ˌpɪərɪˈɒdəɡraf//ˌpɪərɪˈɒdəɡrɑːf/