Among the selection criteria for the new polyurethane were that the material exhibited a combination of good wear characteristics and mechanical properties, was easy to handle, and provided for fast, easy alteration and repair of polyurethane as well as metal patterns.
A linguistic universal is a pattern that occurs systematically across natural languages, potentially true for all of them. For example, All languages have nouns and verbs, or If a language is spoken, it has consonants and vowels.
This is the first page of the 6th edition of their dictionary (1835) Linguistic purism or linguistic protectionism is the practice of defining or recognizing one variety of a language as being purer or of intrinsically higher quality than other varieties.