jactitation n. extreme restlessness marked by frequent move...
sample mean (symbol: X̄, M) the arithmetic average (mean) o...
Apert syndrome an inherited condition in which an abnormall...
axo-axonal synapse a synapse between two nerve cells in whi...
basic hostility in ego psychology, a feeling of hostility a...
shading n. gradations of darkness on the surface of a real...