[mahy-kroh-fahy-ber] 
| a very fine polyester fiber, weighing less than one denier per filament, used esp. for clothing. |
| mi·cro·fi·ber (mī'krō-fī'bər) n. An extremely fine synthetic fiber that can be woven into textiles with the texture and drape of natural-fiber cloth but with enhanced washability, breathability, and water repellancy. |