Meaning & Definition of Constant in English

1. A quantity that does not vary

2. A number representing a quantity assumed to have a fixed value in a specified mathematical context

• "The velocity of light is a constant"

1. Unvarying in nature

• "Maintained a constant temperature"

• "Principles of unvarying validity"

2. Steadfast in purpose or devotion or affection

• "A man constant in adherence to his ideals"

• "A constant lover"

• "Constant as the northern star"

3. 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"