According to Alfred North Whitehead, a type of universally acting perception that is not limited to living, self-conscious beings, and which involves an interconnectedness of the observer and the observed.
The act of grasping or gripping, especially with the hands.
distinctness, focus.
acuteness or acuity.
the fineness of the point a pointed object.
pungency or acidity.
the cutting ability of an edge; keenness.
The product or result of being sharp.