rational

US /ˈræʃ.ən.əl/
UK /ˈræʃ.ən.əl/
"rational" picture
1.

based on or in accordance with reason or logic

:
It's important to make rational decisions.
Her explanation was perfectly rational.
2.

endowed with the capacity to reason

:
Humans are considered rational beings.
A truly rational mind can analyze complex problems.
1.

a rational number

:
The fraction 3/4 is a rational.
Can you identify all the rationals in this set?