Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to filamentous: filamentous bacteria


1. A fine or very thin thread or fiber: filaments of cloth; filaments of flax.
2. A slender or threadlike structure or part, especially:
a. A fine wire that is heated electrically to produce light in an incandescent lamp.
b. The stalk that bears the anther in the stamen of a flower.
c. A chainlike series of cells, as in many algae.
d. A long thin cellular structure characteristic of many fungi, usually having multiple nuclei and often divided by septa.
e. Any of various long thin celestial objects or phenomena, such as a solar filament.

[New Latin fīlāmentum, from Late Latin fīlāre, to spin, from Latin fīlum, thread; see gwhī- in Indo-European roots.]

fil′a·men′tous (-mĕn′təs), fil′a·men′ta·ry (-mĕn′tə-rē, -mĕn′trē) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.filamentous - thin in diameter; resembling a thread
thin - of relatively small extent from one surface to the opposite or in cross section; "thin wire"; "a thin chiffon blouse"; "a thin book"; "a thin layer of paint"
References in classic literature ?
Those which frequent the higher and damp regions, eat the leaves of various trees, a kind of berry (called guayavita) which is acid and austere, and likewise a pale green filamentous lichen (Usnera plicata), that hangs from the boughs of the trees.
Filamentous feathers were present among the feathers on the entire body, but mainly on the head, wings, and tail.
Objective: Increasing crop yield to feed the world is a grand challenge of the 21st century but it is hampered by diseases caused by filamentous plant pathogens.
An ultrasound (US)-guided percutaneous biopsy of the mass revealed a chronic organizing abscess with filamentous bacteria on GMS stain consistent with an actinomycosis abscess.
8,871,493 "Transformation system in the field of filamentous fungal hosts"
cgi) and in the CBS database for filamentous fungi (http:// www.
The CBS-KNAW Fungal Biodiversity Centre hosts a world-renowned collection of living filamentous fungi, yeasts and bacteria numbering more than 80,000.
Among the topics are applying lignocellulosic residues in the production of cellulase and hemicellulases from fungi, the regulation of plant cell wall degrading enzymes formation in filamentous fungi, ligninolytic enzymes from white-rot fungi and application in removing synthetic dyes, genetic tools for producing proteins in fungi, and lipases as imperative fat-degrading enzymes.
The green filamentous algae Cladophora glomerata dominated in the area with a total cover of 60%.
The randomized, double-blind isavuconazole study (SECURE) achieved its primary objective in demonstrating non-inferiority versus voriconazole for the primary treatment of invasive fungal disease caused by Aspergillus species or certain other filamentous fungi.
Furthermore, the attachment of filamentous algae to the surface of the coating, seen in figure 4, was also observed to be detrimental to its long term durability.
Within the filamentous bacteria, dense intracellular lipid structures act to partition the cell at regular intervals along its length.