myrkyllisiin

Myrkyllisiin is a Finnish inflected form of the adjective myrkyllinen, meaning poisonous. It functions as the illative plural form, used with plural nouns to indicate movement toward or into poisonous substances or contexts described by the modified noun.

Etymology and grammar: myrkyllinen is derived from the noun myrkky, poison, with the suffix -llinen forming an adjective meaning "poisonous" or "poison-bearing." The illative plural suffixes in Finnish attach to adjectives when they modify a plural noun in illative case, yielding forms such as myrkyllisiin aineisiin (into/to poisonous substances). In isolation, myrkyllisiin is not a stand-alone noun but a grammatical form.

Usage and context: myrkyllisiin appears primarily in toxicology, safety literature, environmental health, and everyday language when describing poisonous substances or hazards in plural form. It can modify nouns that denote substances, environments, or materials, for example in phrases like myrkyllisiin aineisiin (into poisonous substances) or situations involving exposure to such substances. The word carries a negative connotation and is used to convey risk or harm.

Pronunciation and style: the form is pronounced with Finnish stress on the first syllable, and it contains a double l as part of the root suffix chain. As a grammatical form, it is common in formal writing but also appears in spoken language when detailing hazards or safety instructions.

See also: myrkyllinen, myrkky, toxicology, safety labeling.