英和和英

語源

Borrowed from Latin albēdō (“whiteness”).

発音

• (米国発音) IPA: /ælˈbi.doʊ/
• ハイフネーション: al‧be‧do

名詞

albedo (countable and uncountable, plural albedos or albedoes)

1. (physics, meteorology, astronomy, optics) The fraction of incident light or radiation reflected by a surface or body, commonly expressed as a percentage.
   • 2022 August 10, Gareth Dennis, “How can we run trains when the heat is on?”, in RAIL, number 963, page 45:

     For track, painting rails white at weak points that are more prone to buckling (where the 'critical rail temperature' is close to the 'stress free temperature' [...]) increases their albedo and can help slow how quickly they heat up, reducing their temperature by perhaps five degrees or so.

2. (botany) The whitish inner portion of the rind of citrus fruits that is a source of pectin, commonly referred to as the pith.
3. (alchemy) One of the four major stages of the magnum opus, involving purification of the prima materia.

   Synonym: leucosis

   Coordinate terms: nigredo, citrinitas, rubedo

使用する際の注意点

Albedo is to be distinguished from reflectivity, which refers to one specific wavelength (monochromatic radiation).

派生語

参照

• “albedo”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.

アナグラム

• Baldeo, beload, doable

発音

• (Classical Latin) IPA: [aɫˈbeː.doː]
• (modern Italianate Ecclesiastical) IPA: [alˈbɛː.do]

名詞

albēdō f (genitive albēdinis); third declension (Late Latin)

1. white (color)
2. whiteness

   Synonyms: albitūdō, albor, album

語形変化

Third-declension noun.

関連する語

派生した語

• Italian: albedine
• Spanish: albédine
• → Catalan: albedo
• → English: albedo
  • → Japanese: アルベド (arubedo)
• Esperanto: albedo
• → French: albédo
  • → Romanian: albedo
• → German: Albedo
• → Italian: albedo
• → Polish: albedo
• → Portuguese: albedo
• → Russian: альбе́до (alʹbédo)
• → Spanish: albedo

参照

• “albedo”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• “albedo”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.