A compound or substance containing both carbon and hydrogen, or theoretically, a combined element or form derived from these two elements.
From 'carbo-' (carbon) plus 'hydrogen.' This term likely emerged in early chemistry but was superseded by more specific nomenclature like 'hydrocarbon' for compounds of carbon and hydrogen.
Before modern chemistry terminology was standardized, scientists invented terms like carbohydrogen that sound redundant today—but they were groping toward understanding that so many substances are fundamentally just carbon and hydrogen atoms arranged differently.
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