Definition of irrational
:not rational: such as
a (1)
:not endowed with reason or understanding
(2)
:lacking usual or normal mental clarity or coherence
b
:not governed by or according to reason
- irrational fears
c
Greek & Latin prosody
(1)
of a syllable
:having a quantity other than that required by the meter
(2)
of a foot
:containing such a syllable
d (1)
:being an irrational number
- an irrational root of an equation
(2)
:having a numerical value that is an irrational number
- a length that is irrational
