1. a mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity

Definition categories: state

2. a long-term economic state characterized by unemployment and low prices and low levels of trade and investment

Similar word(s): slump

Definition categories: state, crisis

3. a sunken or depressed geological formation

Definition categories: object, formation

4. sad feelings of gloom and inadequacy

Definition categories: feeling, sadness, unhappiness

5. a period during the 1930s when there was a worldwide economic depression and mass unemployment

Definition categories: time

6. an air mass of lower pressure; often brings precipitation

Similar word(s): low

Definition categories: state

7. a state of depression and anhedonia so severe as to require clinical intervention

Definition categories: state

8. a concavity in a surface produced by pressing

Similar word(s): impression, imprint

Definition categories: shape, concavity, incurvation, incurvature

9. angular distance below the horizon (especially of a celestial object)

Definition categories: link

10. pushing down

- depression of the space bar on the typewriter

Definition categories: act, push, pushing

Sentences with depression as a noun:

- I used to suffer from depression, but now I'm mostly content with my life.

- The Great Depression was the worst financial event in US history.