单词 | periodograph |
释义 | periodograph/ˌpɪərɪˈɒdəɡrɑːf/ /ˌpɪərɪˈɒdəɡraf/Chiefly Science 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. OriginLate 19th century. From period + -o- + -graph. Compare slightly earlier periodogram. |
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