Definition of constant companion
: a person or animal that has been with someone most of the time The old dog had been her constant companion for over 12 years.
Word by Word Definitions
: marked by firm steadfast resolution or faithfulness : exhibiting constancy of mind or attachment
: invariable, uniform
: continually occurring or recurring : regular
: 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
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