reflex
//ˈriːfleks//
Noun
reflexSingular
reflexesPlural
1
An automatic, involuntary response of the body to a stimulus, without conscious thought.
The doctor tested my knee reflex by tapping it with a small hammer.
2
A habitual or instinctive action or response developed through practice or experience.
After years of driving, checking the mirrors became a reflex.
Adjective
reflexCanonical form
1
Occurring as an automatic response without conscious thought or intention.
She had a reflex reaction to the loud noise.
2
(Of an angle) greater than 180 degrees but less than 360 degrees.
A reflex angle measures between 180 and 360 degrees.