Edu:Fiat Object Part

Fiat Object Part

1. A material entity that is a proper part of some larger object, but is not demarcated from the remainder of this object by any physical discontinuities (thus, is it not itself an object). Examples include your upper torso, then Western hemisphere of the planet earth. (from Building Ontologies with Basic Formal Ontology, R. Arp, B. Smith, A. Spear)