An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1) The state of being complete and entire.
2) Logic: The condition of a → formal system if every → valid  → inference is → provable by means of the rules of the system.

From → complete + → -ness.

In photometric studies of a → population of astronomical objects (usually stars or galaxies), the magnitude that represents the faintest members of the population.

→ completeness; → magnitude.

The state of being incomplete, for example in photometric studies of a population of stars when the faintest members of the population are lacking. → completeness

Negative of → completeness.