English to English
noun
- a person who pleads for a cause or propounds an idea
source: WordNet 3.0
- someone who expounds and interprets or explains
source: WordNet 3.0
- a mathematical notation indicating the number of times a quantity is multiplied by itself
source: WordNet 3.0
- A number, letter, or any quantity written on the right hand of and above another quantity, and denoting how many times the latter is repeated as a factor to produce the power indicated
source: Webster 1913