say it: prez-ur-VAY-shuhn
preservation is a noun meaning "the activity of protecting something from loss or danger". It carries 4 recorded senses.
the activity of protecting something from loss or danger
the condition of being (well or ill) preserved
a process that saves organic substances from decay
an occurrence of improvement by virtue of preventing loss or injury or other change
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for preservation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.