Standard Lemma guide

aleurone

noun · 3 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

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  • /ˈæljəˌɹoʊn/
  • /əˈl(j)ʊəɹəʊn/

1

noun

Meaning 1

The protein content of the embryo, endosperm, or perisperm of cereals, in the form of minute particles.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The outer layer (and its major cell type and its specialized protein) of the endosperm.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

granular protein in outermost layer of endosperm of many seeds or cereal grains

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: protein

History

Etymology

1865/70; from Ancient Greek ἄλευρον (áleuron, “flour, meal”).

Across languages

Translations

6 source translations are retained for this English entry.

  • Chinese Mandarin: 糊粉 — protein content of the embryo, endosperm or perisperm of cereals
  • French: aleurone — protein content of the embryo, endosperm or perisperm of cereals
  • Ido: aleurono — protein content of the embryo, endosperm or perisperm of cereals
  • Irish: aileorón — protein content of the embryo, endosperm or perisperm of cereals
  • Italian: aleurone — protein content of the embryo, endosperm or perisperm of cereals
  • Portuguese: aleurona — protein content of the embryo, endosperm or perisperm of cereals