filamentlessadj.

Origin: Formed within English, by derivation. Etymons: filament n., -less suffix.

Etymology: < filament n. + -less suffix.Previous versions of the OED give the stress as: ˈfilamentless.

Without a filament.

ΘΚΠ

the world > matter > light > artificial light > an artificial light > artificial light defined by light-source > electric light > [adjective] > of other types of electric light

bayonet-capped1904

filamentless1934

prefocused1939

short-arc1955

1934 Amer. Year Bk. 1933 697/2 The demonstration of ‘filamentless’ tubes, not commercially available as yet.

1935 Economist 29 June 1509/2 That way of street lighting was due to the filamentless lamp which they called ‘Osira’.

This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2021).

单词	filamentless
释义	filamentlessadj. Origin: Formed within English, by derivation. Etymons: filament n., -less suffix. Etymology: < filament n. + -less suffix.Previous versions of the OED give the stress as: ˈfilamentless. Without a filament. ΘΚΠ the world > matter > light > artificial light > an artificial light > artificial light defined by light-source > electric light > [adjective] > of other types of electric light bayonet-capped1904 filamentless1934 prefocused1939 short-arc1955 1934 Amer. Year Bk. 1933 697/2 The demonstration of ‘filamentless’ tubes, not commercially available as yet. 1935 Economist 29 June 1509/2 That way of street lighting was due to the filamentless lamp which they called ‘Osira’. This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2021). < adj.1934
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