noun

filament

filament, thread, fibre

The filament in the light bulb burned out.

The filament in the light bulb burnt out.

A spider's web is made of fine filaments.

A spider's web is made of fine filaments.

((a/the)) filament (singular) / filaments (plural) a thin thread or wire The filament in the light bulb burnt out.

Synonyms: thread, fibre, wire

From Latin 'filum' meaning 'thread'. It refers to a thread-like object.

Think of the thin 'film' of wire inside a light bulb that glows.

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