periodiniai

Periodiniai is a Lithuanian adjective meaning "periodic" or "recurrent at regular intervals." It describes events, processes, or properties that repeat with a regular period, such as cycles in time or patterns in data.

In science, the term is used to characterize phenomena that repeat in a predictable cycle. In mathematics and physics, periodic functions have a fixed period, and periodic signals repeat at regular intervals. In fields like meteorology, biology, and economics, periodic phenomena such as seasonal patterns, circadian rhythms, or business cycles are described as periodiniai.

In chemistry, the word appears in relation to the periodic table of elements, which is organized by periods and groups. The concept of periodicity underlies the arrangement of elements and their recurring chemical properties when moving across periods or down groups.

In linguistic and general usage, periodiniai contrasts with non-periodic or irregular behavior. Related terms in Lithuanian include periodiškumas (periodicity) and periodizacija (periodization), which describe the broader notions of repetition, regularity, and the organization of phenomena into repeating units.