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