'''কৃত্রিম তন্তু''' ( [[British English]] Synthetic fiber orবা synthetic fibre [[British English|ব্রিটিশ ইংরেজি]] তে)'''Synthetic fiber''' or '''synthetic fibre''' (in [[British English]]; [[American and British English spelling differences#-re, -er|see spelling differences]]) are [[fiber]]s made by humans through [[chemical synthesis]], as opposed to [[natural fiber]]s that are directly derived from [[life|living]] organisms. They are the result of extensive research by [[scientist]]s to improve upon naturally occurring [[animal fiber|animal]] and [[fiber crop|plant fibers]]. In general, synthetic fibers are created by [[extrusion|extruding]] fiber-forming materials through [[spinneret (polymers)|spinnerets]], forming a fiber. These are called synthetic or artificial fibers. Synthetic fibers are created by a process known as polymerization, which involves combining monomers to make a long chain or polymer. The word polymer comes from a Greek prefix "poly" which means "many" and suffix "mer" which means "single units". (Note: each single unit of a polymer is called a monomer). There are two types of polymerization: linear polymerization and cross-linked polymerization.
