Definition of protophenomenon in US English:

protophenomenon

noun

Philosophy
  • A fundamental or irreducible phenomenon.

Origin

1930s; earliest use found in Man: a monthly record of anthropological science. From proto- + phenomenon, perhaps after German Urphänomen.

Pronunciation

protophenomenon

/ˌprəʊtə(ʊ)fɪˈnɒmɪnən/