Dictionary

filament

noun fil·a·ment \ˈfi-lə-mənt\

: a thin thread or hair

: a thin wire in a light bulb that glows when electricity passes through it

Full Definition of FILAMENT

:  a single thread or a thin flexible threadlike object, process, or appendage: as
a :  a tenuous conductor (as of carbon or metal) made incandescent by the passage of an electric current; specifically :  a cathode in the form of a metal wire in an electron tube
b (1) :  a thin and fine elongated constituent part of a gill
(2) :  an elongated thin series of cells attached one to another or a very long thin cylindrical single cell (as of some algae, fungi, or bacteria)
c :  the anther-bearing stalk of a stamen — see flower illustration
fil·a·men·ta·ry \ˌfil-ə-ˈmen-t(ə-)rē\ adjective
fil·a·men·tous \-ˈmen-təs\ adjective
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Examples of FILAMENT

  1. algae covered with tiny filaments
  2. <the cable was made up of fine filaments twisted together>

Origin of FILAMENT

Middle French, from Medieval Latin filamentum, from Late Latin filare to spin — more at file
First Known Use: 1594

Related to FILAMENT

Other Biology Terms

autochthonous, fecund, homunculus, phylogeny, substrate
FILAMENTS Defined for Kids

filament

noun fil·a·ment \ˈfi-lə-mənt\

Definition of FILAMENT for Kids

1
:  a fine thread <a filament of silk>
2
:  a fine wire (as in a light bulb) that is made to glow by the passage of an electric current
3
:  the stalk of a plant stamen that bears the anther
Medical Dictionary

filament

noun fil·a·ment \ˈfil-ə-mənt\

Medical Definition of FILAMENT

:  a single thread or a thin flexible threadlike object, process, or appendage; especially :  an elongated thin series of cells attached one to another or a very long thin cylindrical single cell (as of some algae, fungi, or bacteria)
fil·a·men·tous \ˌfil-ə-ˈment-əs\ adjective

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