Hypothetical gas, perfectly obeys laws.

Conceptual model for social analysis.

Mixes uniformly without energy change.

Idealized self-image and personal standards.

Particles with no volume, non-interacting.

Perfect embodiment of supreme excellence.

Incompressible, non-viscous, uniform flow fluid.

Perfectly ordered, homogeneous atomic structure.

Synonym of ideal solution

In commutative algebra, the norm of an ideal is a generalization of a norm of an element in the field extension.

Proper alignment and contact of teeth.