Noah Webster
Emergence
EMERG'ENCE
EMERG'ENCY, noun The act of rising out of a fluid or other covering or surrounding matter.
1. The act of rising or starting into view; the act of issuing from or quitting.
The white color of all refracted light, at its first emergence--is compounded of various colors.
2. That which comes suddenly; a sudden occasion; an unexpected event.
Most of our rarities have been found out by casual emergency.
In case of emergency, [or in an emergency] he would employ the whole wealth of his empire.