Filamentary \Fil`a*men"ta*ry\, a. Having the character of, or formed by, a filament. [1913 Webster]
22 Moby Thesaurus words for "filamentary": bristlelike, capillary, cirrose, cirrous, fibered, fibroid, fibrous, flagelliform, flossy, funicular, gossamery, hairlike, hairy, ligamental, ropy, silky, stringy, taeniate, taeniform, threadlike, thready, wiry