The Collaborative International Dictionary of English v.0.48:
Presidency \Pres"i*den*cy\, n.; pl. Presidencies. [Cf. F.
1. The function or condition of one who presides;
superintendence; control and care.
2. The office of president; as, Washington was elected to the
3. The term during which a president holds his office; as,
during the presidency of Madison.
4. One of the three great divisions of British India, the
Bengal, Madras, and Bombay Presidencies, each of which had
a council of which its governor was president.