Real Dictionary

relative
a person who is related by blood or marriage; relation [...]
a unit of heredity composed of DNA occupying a fixed position on a chromosome (some viral genes are composed of RNA). A gene may determine a characteristic of an individual by specifying a polypeptide chain that forms a protein or part of a protein ( stru
If you say that something is relative, you mean that it needs to be considered and judged in relation to other things.
the act or an instance of transforming ideas into words [...]
to discover or express the quantity of [...]
You use relative to say that something is true to a certain degree, especially when compared with other things of the same kind.
You use relative when you are comparing the quality or size of two things.
countable noun: If one animal, plant, language, or invention is a relative of another, they have both developed from the same type of animal, plant, language, or invention.
countable noun: Your relatives are the members of your family.