helio

Clipping of heliotrope.

helio (plural helios)

1. A heliotrope (surveying instrument).
   • 1874, Verplanck Colvin, Annual Report on the Progress of the Topographical Survey of the Adirondack Wilderness of New York, for the year 1873:

     A helio or sun-reflecting signal was evidently the desideratum.

   • 1925, U.S. Coast, Geodetic Survey, Special Publication - Coast and Geodetic Survey, page 62:

     A light keeper's duties require him to be alone on a station for days or even weeks at a time, showing a helio to the observer in the afternoon for two or three hours and watching by the signal lamp at night.

   • 1968, Arthur Laidlaw Allan, J. R. Hollwey, J. H. B. Maynes, Practical Field Surveying and Computations, page 258:

     On a cloudy but bright day, it is possible to use a helio effectively over moderate distances of about 6 miles. Light keepers should be made aware of this, since they often think that brilliant sun is essential.

• Heloi, holei, holie

Borrowed from New Latin helium, from Ancient Greek ἥλιος (hḗlios, “sun”), because the element was first observed in the solar spectrum.

• IPA^(key): /ˈeljo/
• Syllabification: he‧lio
• Rhymes: -eljo

helio m (uncountable)

1. helium

• 2022 October, Diccionario ortografico de l'aragonés (Seguntes la PO de l'EFA) (version 13) (in Aragonese), page 1349
• 2024 October, Diccionario aragonés-castellano-catalán: Estudio de Filología Aragonesa (version 14) (in Aragonese), page 645
• “helio”, in Aragonario, diccionario castellano–aragonés (in Spanish)

• Audio:

  (file)

• IPA^(key): (Navarro-Lapurdian) /helio/ [he.li.o]
• IPA^(key): (Southern) /elio/ [e.li.o]
• Rhymes: -io, -o
• Hyphenation: he‧li‧o

helio inan

1. helium

• “helio”, in Euskaltzaindiaren Hiztegia [Dictionary of the Basque Academy] (in Basque), Euskaltzaindia [Royal Academy of the Basque Language]
• “helio”, in Orotariko Euskal Hiztegia [General Basque Dictionary], Euskaltzaindia, 1987–2005

• IPA^(key): /heˈlio/
• Rhymes: -io
• Hyphenation: he‧li‧o

helio (uncountable, accusative helion)

1. alternative form of heliumo

helio m (uncountable)

1. helium

hēliō

1. dative/ablative singular of hēlium

Borrowed from New Latin helium, from Ancient Greek ἥλιος (hḗlios, “sun”), because the element was first observed in the solar spectrum.

• IPA^(key): /ˈeljo/ [ˈe.ljo]

• Audio (Spain):

  (file)

• Rhymes: -eljo
• Syllabification: he‧lio

helio m (uncountable)

1. helium

• “helio”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 10 December 2024
• helio on the Spanish Wikipedia.Wikipedia ^es

• hielo