Skeuomorphic comes from Greek σκεῦος (skeuos, 'tool, container, vessel') + μορφή (morphē, 'form'). Popularized in the 1980s–90s in human-computer interaction to describe interfaces that mimicked physical objects, notably by Apple's early iOS design language. In current use it is an adjective meaning "designing digital interfaces or objects to imitate the appearance of their real-world counterparts". That sense is explained by the older material without requiring a speculative semantic step: the inherited or borrowed base supplies the field of meaning, while the English formation fixes its modern role. The surface form is compositional: its joined elements remain visible in the modern word. Related English forms include morph and metaphor. Derived forms include skeuomorph, skeuomorphism, and skeuomorphically. The word's history is thus visible in its construction: the components remain interpretable even after the whole expression has settled into a conventional English meaning.