streptothrix

from The Collaborative International Dictionary of English v.0.48

Streptothrix \Strep"to*thrix\, n. [NL., fr. Gr. ? pliant, bent +
   ? a hair.] (Biol.)
   A genus of bacilli occurring of the form of long, smooth and
   apparently branched threads, either straight or twisted.
   [1913 Webster]