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.
The noun ROOT WORD has 1 sense: 1  1. (linguistics) the form of a word after all affixes are removed. 2  Meaning: ( 3 linguistics) the form of a word after all affixes are removed. 4  Classified under: 5  Nouns denoting communicative processes and contents. 6  Synonyms: 7  root word; stem; root; theme; radical; base. 8  Context example: