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There are 2 ten-letter words beginning with HELIOS

HELIOSCOPE• helioscope n. (Astronomy) An apparatus for viewing the Sun without harming the eye, by means of an optical filter…
• HELIOSCOPE n. an instrument for observing the sun without injury to the eyes.
HELIOSTATS• heliostats n. Plural of heliostat.
• HELIOSTAT n. an instrument using a mirror to reflect sunlight in a fixed direction, used for studying the sun or signalling messages.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 2 words
  • Scrabble in French: 1 word
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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