Learn English – Word for Thing Being Described

The descriptor is the term that describes something. Is there a word for that which is being described?

Many English words exist that have this "affected-affector" relationship. For example, it exists in mathematics, specifically in regards to arithmetic in the following forms:

• In summation, the result is called the sum, whilst the numbers being added are called the addends.
• In substraction, the result is called the difference, whilst the numbers being subtracted are called the minuend and subtrahend.
• In multiplication, the result is called the product, whilst the numbers being multipled are called the multiplier and multiplicand.¹
• In division, the result is called the quotient, whilst the numbers being divided are called the dividend and divisor.

(Maths source here.)

¹ Or, collectively, just factors.