albedon.

Brit.

/alˈbiːdəʊ/, U.S.

/ælˈbidoʊ/

Origin: A borrowing from Latin. Etymon: Latin albedo.

Etymology: < post-classical Latin albedo whiteness (4th cent.) < classical Latin albus white (see album n.²) + -ēdō , suffix forming nouns. In sense 2a after German Albedo ( L. Seidel Untersuchungen über die Lichtstärke der Planeten Venus, Mars, Jupiter, u. Saturn (1859) 4). With sense 3 compare also German Albedo (1884 or earlier in this sense).

1. Whiteness. Now rare.

ΘΚΠ

the world > matter > colour > named colours > white or whiteness > [noun]

whiteOE

whitenessOE

albedony1623

albedineity1652

albedo1704

1704 J. Flamsteed Let. 15 Nov. in I. Newton Corr. (1967) IV. 425 Yt..Whiteness..he may call candor but tis far from albedo for being mixed with ye prismaticall blue it makes green with ye Red Orange whereas proper white or paint mixed with blue makes onely paler blue.

1879 New Sydenham Soc. Lexicon Albedo, whiteness... Used to describe urinary conditions, which were called the crystalline, the snowy, the limy, and the limpid albedo.

1902 Proc. Royal Soc. 70 314 Let the whiteness or albedo of the white cardboard be expressed numerically by 100, then the flicker..is produced by the contrast between the 60° sector of white albedo 100, and the 300° sector of what is really dark grey, albedo 7.3.

1917 G. L. Berry Eye Hazards Industr. Occupations 120 The albedo of white cloth depends largely upon its thickness, together with the color of the surface upon which it is placed.

a. Astronomy. The proportion of incident solar light that is diffusely reflected by the surface or surface material of a planet or other celestial object.

ΘΚΠ

the world > the universe > planet > [noun] > part of planet

terminator1661

belt1665

fascia1704

fibre1715

white spot1784

dayside1827

nightside1848

albedo1860

north pole1861

polar cap1863

core1882

regolith1897

tectonics1899

sediment ring1955

radiation belt1958

palaeo-radius1960

space needle1961

soil1967

1860 Monthly Notices Royal Astron. Soc. 20 103 The author [sc. L. Seidel] defines the ‘Albedo’ of a planet to be the proportion diffusedly reflected by an element of surface, of the solar light incident on such element.

1878 S. Newcomb Pop. Astron. 549 When the albedo of a body is said to be 0·6.

1936 Nature 11 July 70/1 The albedo of different types of soil and vegetation.

1964 Pop. Sci. May 200/2 Venus' enormous albedo of 0.76 is accounted for by the permanent veil of cloud surrounding the planet.

1991 E. Arnason Woman of Iron People (1992) i. ii. 49 It was smaller than Luna, but closer to its primary, with a much higher albedo.

2009 C. R. C. Sheppard et al. Biol. Coral Reefs x. 280 Clouds probably are not regulators unless there are departures from the balance between cloud greenhouse and cloud albedo effects.

b. Nuclear Physics. The proportion of neutrons entering a region through a surface that return through that surface.

ΚΠ

1936 E. Amaldi & E. Fermi in Physical Rev. 50 910/2 We have observed that the concept of albedo, as we have introduced it, is not completely defined, since the percentage of neutrons reflected by a paraffin surface depends on the angular distribution of the incident neutrons.

1949 W. E. Siri Isotopic Tracers v. 134 The effect of a reflector..is expressed in terms of its albedo γ, defined as the ratio of the number of neutrons that flow back in across the boundary to the number that flow out.

1963 Science 9 Aug. 530/2 (title) Estimate of neutron albedo on the moon's surface resulting from cosmic radiation.

2007 W. M. Stacey Nucl. Reactor Physics (ed. 2) iii. 52 It is possible to evaluate the reflection coefficient, or albedo, for neutrons entering the slab from the left at x = 0.

3. Botany. A white structure or tissue in a plant; spec. the white pith of the inner peel of citrus fruits.

ΘΚΠ

the world > food and drink > food > fruit and vegetables > fruit or a fruit > [noun] > parts of fruit

flesh1574

acetary1672

grain1674

peg1817

sarcocarp1819

pig1859

albedo1923

1923 Jrnl. Assoc. Official Agric. Chemists 7 60 The second extraction in the autoclave made from the peel albedo was heated for one and a half hours under three pounds pressure.

1949 J. B. S. Braverman Citrus Products iii. 77 Penetrating further into the peel of citrus fruit, one comes to the white, spongy, parenchymatous layer (mesocarp), generally known as the albedo.

2010 New Scientist 20 Feb. 76/4 With citrus fruit, a major factor is the peel. The inner white layer—the albedo or pith—is low in solutes and notably high in air spaces.

This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).

单词	albedo
释义	albedon. Brit. /alˈbiːdəʊ/, U.S. /ælˈbidoʊ/ Origin: A borrowing from Latin. Etymon: Latin albedo. Etymology: < post-classical Latin albedo whiteness (4th cent.) < classical Latin albus white (see album n.²) + -ēdō , suffix forming nouns. In sense 2a after German Albedo ( L. Seidel Untersuchungen über die Lichtstärke der Planeten Venus, Mars, Jupiter, u. Saturn (1859) 4). With sense 3 compare also German Albedo (1884 or earlier in this sense). 1. Whiteness. Now rare. ΘΚΠ the world > matter > colour > named colours > white or whiteness > [noun] whiteOE whitenessOE albedony1623 albedineity1652 albedo1704 1704 J. Flamsteed Let. 15 Nov. in I. Newton Corr. (1967) IV. 425 Yt..Whiteness..he may call candor but tis far from albedo for being mixed with ye prismaticall blue it makes green with ye Red Orange whereas proper white or paint mixed with blue makes onely paler blue. 1879 New Sydenham Soc. Lexicon Albedo, whiteness... Used to describe urinary conditions, which were called the crystalline, the snowy, the limy, and the limpid albedo. 1902 Proc. Royal Soc. 70 314 Let the whiteness or albedo of the white cardboard be expressed numerically by 100, then the flicker..is produced by the contrast between the 60° sector of white albedo 100, and the 300° sector of what is really dark grey, albedo 7.3. 1917 G. L. Berry Eye Hazards Industr. Occupations 120 The albedo of white cloth depends largely upon its thickness, together with the color of the surface upon which it is placed. 2. a. Astronomy. The proportion of incident solar light that is diffusely reflected by the surface or surface material of a planet or other celestial object. ΘΚΠ the world > the universe > planet > [noun] > part of planet terminator1661 belt1665 fascia1704 fibre1715 white spot1784 dayside1827 nightside1848 albedo1860 north pole1861 polar cap1863 core1882 regolith1897 tectonics1899 sediment ring1955 radiation belt1958 palaeo-radius1960 space needle1961 soil1967 1860 Monthly Notices Royal Astron. Soc. 20 103 The author [sc. L. Seidel] defines the ‘Albedo’ of a planet to be the proportion diffusedly reflected by an element of surface, of the solar light incident on such element. 1878 S. Newcomb Pop. Astron. 549 When the albedo of a body is said to be 0·6. 1936 Nature 11 July 70/1 The albedo of different types of soil and vegetation. 1964 Pop. Sci. May 200/2 Venus' enormous albedo of 0.76 is accounted for by the permanent veil of cloud surrounding the planet. 1991 E. Arnason Woman of Iron People (1992) i. ii. 49 It was smaller than Luna, but closer to its primary, with a much higher albedo. 2009 C. R. C. Sheppard et al. Biol. Coral Reefs x. 280 Clouds probably are not regulators unless there are departures from the balance between cloud greenhouse and cloud albedo effects. b. Nuclear Physics. The proportion of neutrons entering a region through a surface that return through that surface. ΚΠ 1936 E. Amaldi & E. Fermi in Physical Rev. 50 910/2 We have observed that the concept of albedo, as we have introduced it, is not completely defined, since the percentage of neutrons reflected by a paraffin surface depends on the angular distribution of the incident neutrons. 1949 W. E. Siri Isotopic Tracers v. 134 The effect of a reflector..is expressed in terms of its albedo γ, defined as the ratio of the number of neutrons that flow back in across the boundary to the number that flow out. 1963 Science 9 Aug. 530/2 (title) Estimate of neutron albedo on the moon's surface resulting from cosmic radiation. 2007 W. M. Stacey Nucl. Reactor Physics (ed. 2) iii. 52 It is possible to evaluate the reflection coefficient, or albedo, for neutrons entering the slab from the left at x = 0. 3. Botany. A white structure or tissue in a plant; spec. the white pith of the inner peel of citrus fruits. ΘΚΠ the world > food and drink > food > fruit and vegetables > fruit or a fruit > [noun] > parts of fruit flesh1574 acetary1672 grain1674 peg1817 sarcocarp1819 pig1859 albedo1923 1923 Jrnl. Assoc. Official Agric. Chemists 7 60 The second extraction in the autoclave made from the peel albedo was heated for one and a half hours under three pounds pressure. 1949 J. B. S. Braverman Citrus Products iii. 77 Penetrating further into the peel of citrus fruit, one comes to the white, spongy, parenchymatous layer (mesocarp), generally known as the albedo. 2010 New Scientist 20 Feb. 76/4 With citrus fruit, a major factor is the peel. The inner white layer—the albedo or pith—is low in solutes and notably high in air spaces. This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021). < n.1704
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