Standard Lemma guide

xenobiology

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

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.

  • Received-Pronunciation: /ˌzɛnəʊbaɪˈɒləd͡ʒi/
  • Received-Pronunciation: /ˌziːnəʊbaɪˈɒləd͡ʒi/
  • US: /ˈziːnoʊbaɪˌɑːləd͡ʒi/
  • US: /ˌzɛnoʊbaɪˈɑːləd͡ʒi/
  • US: Recorded audio is listed in the source snapshot.
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -ɒlədʒi

1

noun

Meaning 1

The speculative biology of extraterrestrial life forms.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: exobiology

Antonyms: none provided

Broader terms: astrobiology, life science, natural science, science

2

noun

Meaning 2

The biology of life forms with nonstandard biochemistry or codes, including synthetic life and mirror life.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: life science, natural science, science

History

Etymology

From xeno- + biology. Sometimes attributed to science-fiction author Robert A. Heinlein.

Across languages

Translations

9 source translations are retained for this English entry.

  • Chinese Mandarin: 宇宙生物学 — speculative biology of extraterrestrial life
  • Chinese Mandarin: 外空生物学 — speculative biology of extraterrestrial life
  • Chinese Mandarin: 异源生物学 — speculative biology of extraterrestrial life
  • Estonian: ksenobioloogia — speculative biology of extraterrestrial life
  • Finnish: ksenobiologia — speculative biology of extraterrestrial life
  • French: xénobiologie — speculative biology of extraterrestrial life
  • German: Xenobiologie — speculative biology of extraterrestrial life
  • Japanese: 宇宙生物学 (uchū seibutsugaku) — speculative biology of extraterrestrial life
  • Khmer: ទេសជីវវិទ្យា (teih chiivoa vityie) — speculative biology of extraterrestrial life