Pitting resistance equivalent number (PREN) is a predictive measurement of the corrosion resistance of various types of stainless steel. In general: the higher PREN-value, the more corrosion resistant the steel. Steels with PREN-values above 32 are considered seawater (corrosion) resistant.
the state or condition of being multicultural. 2. the preservation of different cultures or cultural identities within a unified society, as a state or nation. Origin of multiculturalism.
Culture is the set of knowledge acquired over time. In this sense, multiculturalism values the peaceful coexistence and mutual respect between different cultures inhabiting the same planet.