A spring is compressed before it's released; the viper coils before it strikes.
This is how conventions are run now, which is why they really should be compressed into one night, or maybe two.
In the rush to churn graduates out quickly, leadership training was compressed to absurd lengths.
1590s in the surgical sense, from compress (v.).
compress com·press (kŏm'prěs')
A soft pad of gauze or other material applied with pressure to a part of the body to control hemorrhage or to supply heat, cold, moisture, or medication to alleviate pain or reduce infection. v. com·pressed, com·press·ing, com·press·es (kəm-prěs')
To press or squeeze together.