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Definition of faciation in US English:

faciation

noun

Ecology

  • A division of a climax association containing more than one of the dominant species of the association.

Origin

1920s; earliest use found in Frederic Edward Clements (1874–1945). From classical Latin faciēs face + -ation.

Pronunciation

faciation

/ˌfeɪsɪˈeɪʃən/