noun
plural -sions
[noncount] a state of feeling sad
a serious medical condition in which a person feels very sad, hopeless, and unimportant and often is unable to live in a normal way
a period of time in which there is little economic activity and many people do not have jobs [count]
[count] :an area on a surface that is lower than other parts :a low spot
[count] weather :a large area where there is low pressure in the atmosphere with usually clouds and rain