depression

depression /dɪˈprɛʃən/ noun
plural depressions
depression
/dɪˈprɛʃən/
noun
plural depressions
Britannica Dictionary definition of DEPRESSION
1 
[noncount]
a  : a state of feeling sad
b  : a serious medical condition in which a person feels very sad, hopeless, and unimportant and often is unable to live in a normal way
— see also manic depression
2 
: a period of time in which there is little economic activity and many people do not have jobs
[count]
[noncount]
3 
[count] : an area on a surface that is lower than other parts : a low spot
4 
[count] weather : a large area where there is low pressure in the atmosphere with usually clouds and rain