Standard Lemma guide

asthenosphere

noun · 2 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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  • UK: /asˈθɛnə(ʊ)sfɪə/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A portion of the Earth's upper mantle, below the lithosphere.

Definition source: English Wiktionary via Wiktextract

Topics: geography, geology, natural-sciences

Examples

  • Holonyms: upper mantle, outer mantle < mantle < Earth

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

the lower layer of the crust

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: layer

History

Etymology

Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Hellenic *ə- Ancient Greek ἀ- (a-) Ancient Greek σθένος (sthénos) Proto-Indo-European *-os Proto-Indo-European *-ēs Ancient Greek -ης (-ēs) Ancient Greek ἀσθενής (asthenḗs)der. English astheno- Ancient Greek σφαῖρᾰ (sphaîră)bor. Latin sphaera Late Latin sphērader. Old French spherebor. Middle English spere English sphere English -sphere English asthenosphere From astheno- + -sphere.

Across languages

Translations

13 source translations are retained for this English entry.

  • Catalan: astenosfera — the zone of the Earth's upper mantle, below the lithosphere
  • Finnish: astenosfääri — the zone of the Earth's upper mantle, below the lithosphere
  • French: asthénosphère — the zone of the Earth's upper mantle, below the lithosphere
  • Georgian: ასტენოსფერო (asṭenospero) — the zone of the Earth's upper mantle, below the lithosphere
  • German: Asthenosphäre — the zone of the Earth's upper mantle, below the lithosphere
  • Greek: ασθενόσφαιρα (asthenósfaira) — the zone of the Earth's upper mantle, below the lithosphere
  • Irish: astanaisféar — the zone of the Earth's upper mantle, below the lithosphere
  • Italian: astenosfera — the zone of the Earth's upper mantle, below the lithosphere
  • Persian: سستسپهر (sost-sepehr) — the zone of the Earth's upper mantle, below the lithosphere
  • Polish: astenosfera — the zone of the Earth's upper mantle, below the lithosphere
  • Russian: астеносфе́ра (astenosféra) — the zone of the Earth's upper mantle, below the lithosphere
  • Serbo-Croatian: astenosfera — the zone of the Earth's upper mantle, below the lithosphere
  • Spanish: astenosfera — the zone of the Earth's upper mantle, below the lithosphere