A message transmitted by a heliograph (see heliograph, n. 4).
单词 | θ191733 |
释义 | society > communication > indication > signalling > visual signalling > heliography > [noun] > message (3) heliogram1881 A message transmitted by a heliograph (see heliograph, n. 4). helio1886 = heliograph, n. 4b. heliograph1899 A message sent by heliograph. |
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