Definition of rostration in US English:

rostration

noun

  • Zoology. A rostrum on the shell of a mollusc; the fact of having such a rostrum.

Origin

Mid 17th century (in an earlier sense). From classical Latin rostrātus rostrate + -ion; compare -tion. Compare post-classical Latin rostratio.

Pronunciation

rostration

/rɒˈstreɪʃn/