(n): a feature of the mental life of a living organism
(n): a special set of circumstances
(n): a condition that accompanies or influences some event or activity
(n): a phenomenon located at a single point in space-time; the fundamental observational entity in relativity theory
(n): a natural phenomenon involving the physical properties of matter and energy
(n): a phenomenon that follows and is caused by some previous phenomenon
(n): any state or process known through the senses rather than by intuition or reasoning
