Answer:
(n) Person who promotes or interprets
Explanation:
One trick that helps me in identifying the definitions and origins of words is looking either at their prefixes/suffixes or their other definitions. For example, an exponent is a math symbol, that has power. 2 with an exponent of 3 is 8. So the exponent takes that original number to another level, if you know what I mean. In the same way, we can deduce that exponent also means a person who takes an issue to another level, promotes that issue, etc.
Here's an example of how you can figure out a word's meaning by looking at its prefix.
Sentence: I'm a very pedantic person when it comes to calculations.
Word: Pedantic
My Analysis:
Look at the prefix- ped.
Try and come up with another word with this prefix.
Did you get one?
One word is pediatrician.
Now, what does a pediatrician do?
They are doctors for children.
Children are <em>little, minors, small</em>
In the same way, we can deduce that a person who is <em>ped</em><em>antic </em>worries about minor details.
If you start looking at words this way, you'll definitely be able to grasp the definitions easily!