adjective / noun
sixth
SIKSTH/sˈɪksθ/
At position six in an ordered series.
The red sailboat occupies the sixth position after five blue ones.

Etymology
Six supplies the number, while ordinal -th marks its place in a sequence. The resulting adjective identifies the position reached after five items have come before it.
In context
we are in the later stages of the fifth age and a new race is soon to emerge. In the sixth race, humans are to evolve higher psychic powers
More examples
- The sixth chapter explains how plants make food.
- Five customers stand ahead of me, so I am the sixth.
- The melody rises by a sixth, from C to A.
Forms
sixth · sixths
six noun — The number that comes after five.