lisääntyvät

Lisääntyvät is a Finnish verb form of lisääntyä, meaning to increase, multiply, or reproduce. It represents the third-person plural present tense in the active voice, used with a plural subject. For example, Linnut lisääntyvät keväällä (Birds reproduce/increase in number in spring), and Populaatiot lisääntyvät nopeasti lämpimänä kautena (Populations increase rapidly during the warm season).

Grammatical notes: lisääntyä is an intransitive verb, and lisääntyvät is the plural present form. Its singular present form is lisääntyy. The noun form of the same concept is lisääntyminen, meaning reproduction or increase in numbers. The participial adjective lisääntyvä (reproducing, increasing) can describe entities engaged in the process, as in lisääntyvät yksilöt (reproducing individuals).

Semantic range: lisääntyvät covers biological reproduction, population growth, and proliferation of cells or phenomena in general. In ecology and epidemiology it is common to describe how species or pathogens lisääntyvät under favorable conditions. In a statistical or mathematical context, it may describe increasing counts or frequencies over time.

Related terms: lisääntyminen (reproduction, increase), lisääntyvä (reproducing), lisääntyminen (noun form). The concept is contrasted with väheneminen (decrease) and stagnaatio (stagnation) in analyses of dynamics.

Usage notes: Because lisääntyvät is plural, it requires a plural subject or a collective noun. It is used in plain descriptive prose and in scientific writing to denote ongoing growth or reproduction. The verb’s tone is neutral and factual, suitable for encyclopedia-style coverage.