Standard Lemma guide

thulium

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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  • thū'lēəm
  • /ˈθjuːliəm/
  • tho͞o'lēəm
  • /ˈθuːliəm/
  • General-American: Recorded audio is listed in the source snapshot.
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -uːliəm

1

noun

Meaning 1

A metallic chemical element (symbol Tm) with atomic number 69: a fairly soft, easily workable metal with a bright silvery-gray lustre.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Tm, atomic number 69

Antonyms: none provided

Broader terms: metallic element, metal

History

Etymology

Etymology tree English Thule Proto-Indo-European *-om Proto-Italic *-om Latin -umder. English -ium English thulium From Thule (a poetic name for Scandinavia) + -ium.

Across languages

Translations

72 source translations are retained for this English entry.

  • Afrikaans: tulium — chemical element
  • Albanian: tulium — chemical element
  • Arabic: ثُولِيُوم (ṯūliyūm) — chemical element
  • Arabic: تُولِيُوم (tūliyūm) — chemical element
  • Armenian: թուլիում (tʻulium) — chemical element
  • Asturian: tuliu — chemical element
  • Basque: tulioa — chemical element
  • Belarusian: ту́лій (túlij) — chemical element
  • Breton: tuliom — chemical element
  • Bulgarian: ту́лий (túlij) — chemical element
  • Catalan: tuli — chemical element
  • Chinese Mandarin: 銩 /铥 (diū) — chemical element
  • Cornish: thulyum — chemical element
  • Czech: thulium — chemical element
  • Danish: thulium — chemical element
  • Dutch: thulium — chemical element
  • Esperanto: tulio — chemical element
  • Estonian: tuulium — chemical element
  • Faroese: tulium — chemical element
  • Finnish: tulium — chemical element
  • French: thulium — chemical element
  • West-Frisian: thulium — chemical element
  • Friulian: tuli — chemical element
  • Galician: tulio — chemical element
  • Georgian: თულიუმი (tuliumi) — chemical element
  • German: Thulium — chemical element
  • Greek: θούλιο (thoúlio) — chemical element
  • Hebrew: תוליום (túlyum) — chemical element
  • Hindi: व्याहरिला (vyāhrilā) — chemical element
  • Hungarian: túlium — chemical element
  • Icelandic: túlín — chemical element
  • Indonesian: thulium — chemical element
  • Irish: túiliam — chemical element
  • Italian: tulio — chemical element
  • Japanese: ツリウム (tsuriumu) — chemical element
  • Kashubian: tul — chemical element
  • Khmer: ទុយល្យូម (tuylyuum) — chemical element
  • Korean: 툴륨 (tullyum) — chemical element
  • Latin: thulium — chemical element
  • Latvian: tūlijs — chemical element
  • Lithuanian: tulis — chemical element
  • Luxembourgish: Thulium — chemical element
  • Macedonian: тулиум (tulium) — chemical element
  • Malay: tulium — chemical element
  • Maltese: tuljum — chemical element
  • Manx: thulium — chemical element
  • Mongolian: тули (tuli) — chemical element
  • Norwegian: thulium — chemical element
  • Polish: tul — chemical element
  • Portuguese: túlio — chemical element
  • Romanian: tuliu — chemical element
  • Russian: ту́лий (túlij) — chemical element
  • Scottish Gaelic: tùiliam — chemical element
  • Serbo-Croatian: тулиjум — chemical element
  • Serbo-Croatian: тулиj — chemical element
  • Serbo-Croatian: tulijum — chemical element
  • Serbo-Croatian: tulij — chemical element
  • Slovak: túlium — chemical element
  • Slovene: tulij — chemical element
  • Spanish: tulio — chemical element
  • Swedish: tulium — chemical element
  • Tajik: тулий (tuliy) — chemical element
  • Tamil: துலியம் (tuliyam) — chemical element
  • Thai: ทูเลียม (tuu-lîiam) — chemical element
  • Turkish: tulyum — chemical element
  • Ukrainian: ту́лій (túlij) — chemical element
  • Uyghur: تۇلىي (tuliy) — chemical element
  • Uzbek: tuliy — chemical element
  • Uzbek: тулий (tuliy) — chemical element
  • Vietnamese: tuli — chemical element
  • Volapük: tulin — chemical element
  • Welsh: thwliwm — chemical element