Definition of superficies in US English:

superficies

noun

archaic
  • 1A surface.

    ‘the superficies of a sphere’
    • ‘He found an analogue in the nature of the body-body relation: two bodies are united when their superficies touch and their movements take on a mutual dependence.’
    1. 1.1literary An outward part or appearance.
      ‘the superficies of life’

Origin

Mid 16th century: from Latin, from super- ‘above’ + facies ‘face’.

Pronunciation

superficies

/ˌsupərˈfɪʃiz//ˌso͞opərˈfiSHēz/