rörlig

Rörlig is a Swedish adjective meaning movable or capable of being moved. It is used to describe objects, parts, or concepts that can change position or state, as opposed to something fixed. In everyday language it appears in phrases such as rörlig del (a moving part) and rörlig kostnad (a variable cost). The opposite form is often fasta or fasta kostnader (fixed costs).

Etymology and form: Rörlig derives from the verb röra, meaning to move, combined with the suffix -lig, which forms adjectives indicating a characteristic. The related noun rörlighet denotes mobility, range of motion, or versatility. The word follows typical Swedish adjective inflection, appearing as rörlig before en-words and as rörligt in neuter forms or predicative use such as Det är rörligt (it is movable).

Usage and domains: In engineering, rörlig describes components designed to move or adjust position, such as rörlig del or rörlig led. In economics, rörlig kostnad refers to variable costs that change with production volume, in contrast to fasta kostnader (fixed costs). In medicine and fitness, rörlighet or ledens rörlighet refers to the range of motion of joints or the ability to move freely. The term is common in technical writing, instruction manuals, and educational contexts.

Examples: A robot arm may have several rörliga leder. A manufacturing budget distinguishes between rörliga kostnader and fasta kostnader. Improved rörlighet can be a stated goal in physical therapy, relating to joint flexibility and range of motion.