primacy >> /ˈpraɪməsi/
Definition: [noun] The fact of being primary, preeminent, or more important.
Example: the primacy of air power in the modern war
Definition: [noun] The office, period of office, or authority of a primate of certain churches.
Example: the first years of his primacy were tranquil
Definition: [noun] The fact of an item having been presented earlier to the subject (especially as increasing its likelihood of being remembered)
Example: the primacy effect is thought to reflect recall from a long-term memory store