| Dalton's law |
law of multiple proportions: (chemistry) law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation (chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture; the pressure of a gas in a mixture equals the pressure it would exert if it occupied the same volume alone at the same temperature
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| dam |
a barrier constructed to contain the flow of water or to keep out the sea decameter: a metric unit of length equal to ten meters female parent of an animal especially domestic livestock obstruct with, or as if with, a dam; "dam the gorges of the Yangtse River"
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| day blindness |
hemeralopia: inability to see clearly in bright light
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| day care center |
day nursery: a nursery for the supervision of preschool children while the parents work
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| day nursery |
a nursery for the supervision of preschool children while the parents work
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