filament

play
noun fil·a·ment \ˈfi-lə-mənt\

Definition of filament

  1. :  a single thread or a thin flexible threadlike object, process, or appendage (see appendage 2): such asa :  a tenuous (see tenuous 2) conductor (as of carbon or metal) made incandescent by the passage of an electric current; specifically :  a cathode (see cathode 2) in the form of a metal wire in an electron tubeb (1) :  a thin and fine elongated constituent part of a gill (see 2gill 1) (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

filamentary

play \ˌfi-lə-ˈmen-t(ə-)rē\ adjective

filamentous

play \ˌfi-lə-ˈmen-təs\ adjective

Examples of filament in a Sentence

  1. algae covered with tiny filaments

  2. the cable was made up of fine filaments twisted together

Recent Examples of filament from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'filament'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of filament

Middle French, from Medieval Latin filamentum, from Late Latin filare to spin — more at file


First Known Use: 1594


FILAMENT Defined for English Language Learners

filament

play
noun

Definition of filament for English Language Learners

  • : a thin thread or hair

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


FILAMENT Defined for Kids

filament

play
noun fil·a·ment \ˈfi-lə-mənt\

Definition of filament for Students

  1. 1 :  a fine thread a filament of silk

  2. 2 :  a fine wire (as in a light bulb) that is made to glow by the passage of an electric current

  3. 3 :  the stalk of a plant stamen that bears the anther


Medical Dictionary

filament

play
noun fil·a·ment \ˈfil-ə-mənt\

Medical Definition of filament

  1. :  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)

filamentous

\ˌfil-ə-ˈment-əs\play adjective


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