interfacial

[ in-ter-fey-shuh l ]
/ ˌɪn tərˈfeɪ ʃəl /
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adjective

included between two faces.
of, relating to, or of the nature of an interface.

Origin of interfacial

First recorded in 1830–40; inter- + facial
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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