Raðir

Raðir is the plural form of röð in Icelandic, meaning a line, row, or sequence. The term is used across everyday language as well as more technical fields to describe items that are arranged in order or placed in a line.

In everyday Icelandic, raðir describe queues or lines of people and objects. For example, a store might have long raðir of customers, or books may be arranged in raðir on a shelf. The concept emphasizes order and a specific arrangement.

In mathematics and related disciplines, röð denotes a sequence: an ordered collection of elements. Sequences can be finite or infinite and are a foundational concept in areas such as algebra, analysis, and statistics. In linear algebra, a row of a matrix is often described as a röð of its entries, representing the horizontal arrangement of those values.

In computer science and data processing, röð is used to refer to a sequence of data items. Depending on context, it may also relate to a queue—an abstract data structure where elements are processed in a first-in, first-out order. The Icelandic terminology thus overlaps with both mathematical sequencing and practical notions of ordered processing.

Etymology and related terms: röð originates from Old Norse and is cognate with similar words in other Nordic languages, reflecting the core idea of order and arrangement. The plural raðir typically appears in contexts describing multiple lines, sequences, or rows.