typpipitoisista

Typpipitoisista is a Finnish inflected form of the adjective typpipitoisa, meaning nitrogen-containing or nitrogen-rich. It is the elative plural form, used to refer to nitrogen-containing items in expressions such as “from nitrogen-containing substances” or “of nitrogen-containing substances.” In practice, typpipitoisista accompanies a noun in the elative plural, for example typpipitoisista yhdisteistä (from nitrogen-containing compounds) or typpipitoisista lannoitteista (from nitrogen-containing fertilizers). The governing noun is often understood from context, especially in technical writing.

The term is most common in scientific and technical Finnish, including chemistry, agronomy, environmental science, and biology. It is formed from typpi (nitrogen) and pitoisa (containing) and follows Finnish inflection patterns for adjectives. The elative plural form typpipitoisista specifically signals origin or source, as in discussions of materials or wastes that originate from nitrogen-containing substances. Other related forms exist, such as typpipitoiset (nominative plural) when the nitrogen-containing items themselves are the subject, and typpipitoisten or typpipitoisten yhdisteiden in other cases, to indicate possession or modification of different nouns.

Notes for learners: typpipitoisista is rarely used without a following noun in the elative plural; its meaning relies on context. The word illustrates how Finnish compounds combine a root (typpi) with a descriptive suffix (pitoisa) and a case-ending (ista/istä) to express precise grammatical relationships in technical writing.