Leptothrix
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Lep´to`thrix
(lĕp´tô`thrĭks)n. | 1. | (Biol.) A genus of bacteria, characterized by having their filaments very long, slender, and indistinctly articulated. |
a. | 1. | (Biol.) Having the form of a little chain; - applied to bacteria when, as in multiplication by fission, they form a chain of filiform individuals. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.