constant
/ˈkän(t)-stənt/
adjective
marked by firm steadfast resolution or faithfulness : exhibiting constancy of mind or attachment
invariable, uniform
continually occurring or recurring : regular
a constant friend
noun
something invariable or unchanging: such as
a number that has a fixed value in a given situation or universally or that is characteristic of some substance or instrument
a number that is assumed not to change value in a given mathematical discussion
biographical name
Benjamin 1767—1830 French writer and politician