1. (

• constant ,
• constant_quantity ,
• invariable

) a quantity that does not vary ;

2. (

• constant

) a number representing a quantity assumed to have a fixed value in a specified mathematical context; "the velocity of light is a constant" ;

1. (

• changeless ,
• constant ,
• invariant ,
• unvarying

) unvarying in nature; "maintained a constant temperature"; "principles of unvarying validity" ;

2. (

• constant

) steadfast in purpose or devotion or affection; "a man constant in adherence to his ideals"; "a constant lover"; "constant as the northern star" ;

3. (

• ceaseless ,
• constant ,
• incessant ,
• never-ending ,
• perpetual ,
• unceasing ,
• unremitting

) uninterrupted in time and indefinitely long continuing; "the ceaseless thunder of surf"; "in constant pain"; "night and day we live with the incessant noise of the city"; "the never-ending search for happiness"; "the perpetual struggle to maintain standards in a democracy"; "man's unceasing warfare with drought and isolation"; "unremitting demands of hunger" ;