Standard Lemma guide

urbilaterian

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.

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Pronunciation

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1

noun

Meaning 1

The hypothetical last common ancestor to all bilaterians.

Definition source: English Wiktionary via Wiktextract

Topics: biology, natural-sciences

Examples

  • 2008, Philosophical Transactions: Biological Sciences, Volume 363, Issues 1493-1496, page 1523, This way, different aspects of the molecular architecture of the urbilaterian nervous system are reconstructed and yield insight into the degree of centralization that was in place in the bilaterian ancestors.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From ur- (“original”) + bilaterian.