heliogram - WordReference.com Dictionary of English

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- See Also:
- - helical
  - helices
  - helichrysum
  - helicity
  - helicoid
  - helicon
  - helicopter
  - helicopter view
  - helio-
  - heliocentric
  - heliogram
  - heliograph
  - heliogravure
  - heliometer
  - heliopause
  - heliosphere
  - heliostat
  - heliotherapy
  - heliotrope
  - heliotropism
  - helipad
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heliogram

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Concise Oxford English Dictionary © 2008 Oxford University Press:
heliogram/ˈhiːliəɡram/

▶noun a message sent by reflecting sunlight in flashes from a movable mirror.

'heliogram' also found in these Oxford entries:

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