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Heliophytes

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• Helios

  [hee-lee-os] /ˈhi liˌɒs/ noun 1. the ancient Greek god of the sun, represented as driving a chariot across the heavens; identified by the Romans with Sol. [hee-lee-oh] /ˈhi liˌoʊ/ noun, plural helios. Informal. 1. a heliogram. 2. a heliograph. /ˈhiːlɪˌɒs/ noun 1. (Greek myth) the god of the sun, who drove his chariot daily across […]

• Heliopolis

  [hee-lee-op-uh-lis] /ˌhi liˈɒp ə lɪs/ noun 1. Biblical name On. an ancient ruined city in N Egypt, on the Nile delta. 2. ancient Greek name of . /ˌhiːlɪˈɒpəlɪs/ noun 1. (in ancient Egypt) a city near the apex of the Nile delta: a centre of sun worship Ancient Egyptian name On 2. the Ancient Greek […]

• Helioscope

  [hee-lee-uh-skohp] /ˈhi li əˌskoʊp/ noun 1. a telescope for viewing the sun, adapted to protect the eye of the viewer from the sun’s glare.

• Helioseismology

  noun the study of the sun’s interior by the analysis of its oscillations and sound waves passing through it See asteroseismology Word Origin helio- ‘sun’ + seismology

• Heliosphere

  [hee-lee-uh-sfeer] /ˈhi li əˌsfɪər/ noun, Astronomy. 1. the region around the sun over which the effect of the solar wind extends. /ˈhiːlɪəʊˌsfɪə/ noun 1. the region around the sun outside of which the sun’s influence is negligible and interstellar space begins heliosphere (hē’lē-ə-sfîr’) The large, roughly elliptical region of space around the Sun through which […]

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