surface

Reading level: medium

Estimated CEFR level: A2 — Elementary

Estimated from word frequency; not an official CEFR classification.

Definition

noun the outer boundary of an artifact or a material layer constituting or resembling such a boundary
noun the extended two-dimensional outer boundary of a three-dimensional object
noun the outermost level of the land or sea

From Middle French surface. By surface analysis, sur- + face. Doublet of superficies.

This fastens the foot to any smooth surface. — The Insect Folk, Morley, Margaret Warner
But the surface of the river was undisturbed. — This star shall be free, Murray Leinster
Every scratch on the surface of his soul festered. — The secret of Father Brown, G. K. (Gilbert Keith) Chesterton

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