surface

noun (TOP)

/ˈsɜː.fɪs/

/ˈsɝː-/

Definition

B2 [C] the outer or top part or layer of something: Tropical rain forests used to cover ten percent of the Earth's surface. The marble has a smooth, shiny surface. Neil Armstrong was the first person to set foot on the surface of the moon.Surfaces of objectsEdges and extremities of objects › [C] the top layer of a field or track on which sports are played: The match will be played on an artificial/all-weather surface.Surfaces on which sports take place › [C] the flat top part of a table, cupboard, etc.: a work surface Don't put anything wet on a polished surface, or it will leave a mark.Surfaces of objectsEdges and extremities of objects

(Definition of surface noun (TOP) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)