pyörivissä

Pyörivissä is a Finnish adjective form functioning as the inessive plural of pyörivä, meaning "rotating" or "spinning." In Finnish, adjectives agree with the nouns they modify in number and case, so when describing plural nouns in the inessive case the form becomes pyörivissä. The phrase can be translated roughly as "in rotating [things]" or "in spinning [things]." The form is common in technical, scientific, and descriptive Finnish to indicate motion around an axis or the state of rotation across a group of items.

Usage: It typically modifies plural nouns, for example "pyörivissä laitteissa" (in rotating devices) and "pyörivissä koneissa" (in rotating machines). It can also appear as part of more complex phrases within sentences to emphasize ongoing rotation. In everyday language, speakers more often use "pyörivät osat" (rotating parts) or the verb phrase "pyörii" to convey similar ideas.

Etymology and related forms: The word derives from the verb pyöriä (to rotate, to spin). It is formed from the stem pyöriv- plus the inessive plural suffix -issä. Related forms include pyörivä (nominative singular, "rotating"), kiertävä ("revolving"), and other participial adjectives. See also: pyöriä, pyörivä, kiertävä.