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A19
From Wiktionary, the free dictionary
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Translingual
Etymology
From being the (A) standard shape (pear-like), and being 19 × 1/8-th inch in diameter of the speherical portion.
Noun
A19
- (electrics, lighting) A standard lightbulb bulb, the pear-shaped bulb of 19/8-ths inch in width; the common sized lightbulb.
Coordinate terms
- (common regular bulb size screw base in North America) E26
- (common regular bulb size screw base in Europe) E27
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