Standard Lemma guide

ununseptium

noun · 1 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.

  • /uːnuːnˈsɛpti.əm/
  • Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

The systematic element name for the chemical element with atomic number 117 (symbol Uus). The element is now named tennessine.

Definition source: English Wiktionary via Wiktextract

Usage: dated, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Systematic element name, from un- + un- + sept- + -ium.

Across languages

Translations

26 source translations are retained for this English entry.

  • Arabic: أُنُون سِيبْتِيُوم (ʔunun sibtiyum) — element with atomic number 117
  • Catalan: ununsepti — element with atomic number 117
  • Dutch: ununseptium — element with atomic number 117
  • Esperanto: ununseptio — element with atomic number 117
  • Estonian: ununseptium — element with atomic number 117
  • Finnish: ununseptium — element with atomic number 117
  • French: ununseptium — element with atomic number 117
  • German: Ununseptium — element with atomic number 117
  • Greek: ουνουνσέπτιο (ounounséptio) — element with atomic number 117
  • Hungarian: ununseptium — element with atomic number 117
  • Italian: ununseptio — element with atomic number 117
  • Korean: 우눈셉튬 (ununseptyum) — element with atomic number 117
  • Malay: ununseptium — element with atomic number 117
  • Norwegian: ununseptium — element with atomic number 117
  • Polish: ununseptium — element with atomic number 117
  • Portuguese: ununséptio — element with atomic number 117
  • Romanian: ununseptiu — element with atomic number 117
  • Russian: унунсе́птий (ununséptij) — element with atomic number 117
  • Serbo-Croatian: унунсептиј — element with atomic number 117
  • Serbo-Croatian: унунсептијум — element with atomic number 117
  • Serbo-Croatian: ununseptij — element with atomic number 117
  • Serbo-Croatian: ununseptijum — element with atomic number 117
  • Spanish: ununseptio — element with atomic number 117
  • Swedish: ununseptium — element with atomic number 117
  • Thai: อูนอูนเซปเทียม (ūnūnsêptiam) — element with atomic number 117
  • Ukrainian: унунсе́птій (ununséptij) — element with atomic number 117