noun
perspiration
per-spuh-RAY-shn/ˌpɜːrspəˈreɪʃn/
Moisture produced and released through the skin.
Beads of perspiration cover his forehead as he wipes his brow.

Etymology
The pieces give the image of breathing through. Perspiration first named a breathing-through process, then the release of invisible moisture through the skin, and eventually the sweat itself.
In context
Perspiration ran down him in drops, his neck was all wet.
More examples
- Her shirt is damp with perspiration after the workout.
- He feels perspiration on his palms before the interview.
- Perspiration runs down my back in the summer heat.
Forms
perspiration
perspire verb — To release moisture through the skin.
Similar words
- sweat
- The everyday word, while perspiration sounds more formal.