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  • Foundations of the Czech chemical nomenclature and terminology were laid during the 1820s and 1830s. These early naming conventions fit the Czech language and, being mostly work of a single person, provided a consistent way to name chemical compounds. Over time, the nomenclature expanded considerably, following the recommendations by the International Union of Pure and Applied Chemistry in recent era. Unlike the nomenclature that is used in biology or medicine, the chemical nomenclature stays closer to the Czech language, uses Czech pronunciation and inflection rules but developed its own, very complex, system of morphemes, grammar, syntax, punctuation and use of brackets and numerals. Certain terms use the phonetic transcription, but the rules for spelling are inconsistent.