What does the word compression mean?

Usage examples for compression

  1. Schultze found that if the frog's egg is turned upside down at the time of its first division and kept in this abnormal position, through compression between two glass plates for about 20 hours, a small number of eggs may give rise to twins. – Darwin and Modern Science by A.C. Seward and Others
  2. Then it abandoned its efforts at compression, and with many loads of moist clay moulded a special compartment in which the tarantula, still in a state of suspended animation, was snugly stowed. – My Tropic Isle by E J Banfield
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