Definition of protomartyr in US English:

protomartyr

noun

  • The first martyr for a cause, especially the first Christian martyr, St. Stephen.

    • ‘St Stephen is also known as the protomartyr, the first martyr who imitates most closely the death of Jesus.’

Pronunciation

protomartyr

/ˈprōdōˌmärdər//ˈproʊdoʊˌmɑrdər/