from The American Heritage® Dictionary of the English Language, 4th Edition
- 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Very fine synthetic fiber; cloth made of such fiber.
micro- + fiber (Wiktionary)