fuel cell. (physical chemistry). An electrochemical device in which the reaction between a fuel, such as hydrogen, and an oxidant, such as oxygen or air, converts the chemical energy of the fuel directly into electrical energy without combustion.
The word 'soup' is a noun, a common, concrete noun; a word for a thing. The word 'soup' also functions informally as a verb for the term to 'soup up', to change something inâ¦ order to make it faster or more powerful or effective. 2 people found this useful.
Adjectives modify nouns. To modify means to change in some way. For example:  1 I ate a meal.. 2  Meal is a noun. 3  We don't know what kind of meal; all we know is that someone ate a meal.  4 I ate an enormous lunch.. 5  Lunch is a noun, and enormous is an adjective that modifies it.6  It tells us what kind of meal the person ate. Meal is a noun. 2  We don't know what kind of meal; all we know is that someone ate a meal.  3 I ate an enormous lunch.. 4  Lunch is a noun, and enormous is an adjective that modifies it.