a device for showing the operating condition of some system
a signal for attracting attention
(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
an artifact that has been created by someone or some process; "they improve their product every year"; "they export most of their agricultural production"
a quantity obtained by multiplication; "the product of 2 and 3 is 6"
a consequence of someone's efforts or of a particular set of circumstances; "skill is the product of hours of practice"; "his reaction was the product of hunger and fatigue"
a chemical substance formed as a result of a chemical reaction; "a product of lime and nitric acid"