Protaspis

//pɹəˈtaspɪs// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A stage in the development of a trilobite where the creature has not yet developed articulated segments.

Etymology

From prot- + aspis (from Ancient Greek ἀσπίς (aspís, “shield”)).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.