(thermodynamics) A model of diffusion used to explain the second law of thermodynamics, considering a number of particles in two containers, which independently change container at a certain rate.

Someone's understanding of how a system works.

(shipbuilding) a model of a vessel formed of boards which are shaped according to the water lines as shown in the plans and laid upon each other to form a solid model

(Internet) A cross-platform, language-independent convention for representing and interacting with objects in HTML, XHTML and XML documents.

The set of diagrams and metadata which fully defines and describes an enterprise architecture.

(finance) An asset pricing model using one or more common factors to price returns. With only one factor, representing the market portfolio, it is called a single factor model. With two or more factors, it is called a multifactor model.

(chemistry) A type of three-dimensional molecular model, where the atoms are represented by spheres whose radii are proportional to the radii of the atoms, and whose center-to-center distances are proportional to the distances between the atomic nuclei, all in the same scale.

(cytology) A proposed transport mechanism of protein through the Golgi apparatus in which the cisternae move, beginning at the cis face and progressing via the medial face to the trans face.

(biology) A theory relating to a series of actions by the actin and myosin filaments that enable the muscle to undergo contraction.

an abstract conceptual representation of structured data