Standard Lemma guide

albedo

noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Canada, US: /ælˈbi.doʊ/
  • US: Recorded audio is listed in the source snapshot.
  • General-American: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

The fraction of incident light or radiation reflected by a surface or body, commonly expressed as a percentage.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: astronomy, climatology, engineering, meteorology, natural-sciences, optics, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The whitish inner portion of the rind of citrus fruits that is a source of pectin, commonly referred to as the pith.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: biology, botany, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

One of the four major stages of the magnum opus, involving purification of the prima materia.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: alchemy, pseudoscience

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: leucosis

Antonyms: none provided

4

noun

Meaning 4

the ratio of reflected to incident light

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: reflective power

Antonyms: none provided

Broader terms: ratio

History

Etymology

Etymology tree Proto-Indo-European *albhós Proto-Italic *alβos Latin alb(us) Proto-Indo-European *-Hōder. Latin -ēdō Latin albēdōbor. English albedo Borrowed from Latin albēdō (“whiteness”).

Across languages

Translations

35 source translations are retained for this English entry.

  • Arabic: عَاكِسِيَّة (ʕākisiyya) — fraction of incident light or radiation reflected by a surface or body
  • Arabic: وَضَاءَة (waḍāʔa) — fraction of incident light or radiation reflected by a surface or body
  • Catalan: albedo — fraction of incident light or radiation reflected by a surface or body
  • Chinese Mandarin: 反照率 (fǎnzhàolǜ) — fraction of incident light or radiation reflected by a surface or body
  • Esperanto: albedo — fraction of incident light or radiation reflected by a surface or body
  • Finnish: heijastussuhde — fraction of incident light or radiation reflected by a surface or body
  • French: albédo — fraction of incident light or radiation reflected by a surface or body
  • German: Albedo — fraction of incident light or radiation reflected by a surface or body
  • Greek: άλβεδό (álvedó) — fraction of incident light or radiation reflected by a surface or body
  • Hindi: धवलता (dhavaltā) — fraction of incident light or radiation reflected by a surface or body
  • Hindi: प्रकाशानुपात (prakāśānupāt) — fraction of incident light or radiation reflected by a surface or body
  • Inuktitut: ᖃᐅᒪᓂᖅ ᒪᓂᕋᒥᙶᖅᑐᖅ — fraction of incident light or radiation reflected by a surface or body
  • Italian: albedo — fraction of incident light or radiation reflected by a surface or body
  • Japanese: 反射能 (hanshanō) — fraction of incident light or radiation reflected by a surface or body
  • Japanese: アルベド (arubedo) — fraction of incident light or radiation reflected by a surface or body
  • Korean: 반사율 (bansayul) — fraction of incident light or radiation reflected by a surface or body
  • Korean: 알베도 (albedo) — fraction of incident light or radiation reflected by a surface or body
  • Malay: albedo — fraction of incident light or radiation reflected by a surface or body
  • Persian: سپیدایی (sepidâyi) — fraction of incident light or radiation reflected by a surface or body
  • Polish: albedo — fraction of incident light or radiation reflected by a surface or body
  • Portuguese: albedo — fraction of incident light or radiation reflected by a surface or body
  • Romanian: albedo — fraction of incident light or radiation reflected by a surface or body
  • Russian: альбе́до (alʹbédo) — fraction of incident light or radiation reflected by a surface or body
  • Spanish: albedo — fraction of incident light or radiation reflected by a surface or body
  • Tamil: எதிரொளிதிறன் (etiroḷitiṟaṉ) — fraction of incident light or radiation reflected by a surface or body
  • Tamil: வெண் எகிர்சிதறல் (veṇ ekircitaṟal) — fraction of incident light or radiation reflected by a surface or body
  • Turkish: yansıtabilirlik — fraction of incident light or radiation reflected by a surface or body
  • Vietnamese: suất phản chiếu — fraction of incident light or radiation reflected by a surface or body
  • Finnish: aluskuori — part of citrus fruit rind
  • French: ziste — part of citrus fruit rind
  • French: albédo — part of citrus fruit rind
  • Korean: 귤락 (gyullak) — part of citrus fruit rind
  • Occitan: albedo — part of citrus fruit rind
  • Polish: albedo — part of citrus fruit rind
  • Portuguese: medula — part of citrus fruit rind
Real reading context

albedo in complete knowledge articles