Noun

(es)

an instance of losing, such as a defeat

The match ended in their first loss of the season.

The result of an alteration in a function or characteristic of the body, or of its previous integrity.

Loss of an arm ; loss of weight ; loss of cognitive functions ; loss of appetite.

the hurtful condition of having lost something or someone

We mourn his loss .

(in the plural) casualties, especially physically eliminated victims of violent conflict

The battle was won, but losses were great.

(financial) the sum an entity loses on balance

''The sum of expenditures and taxes minus total income is a loss , when this difference is positive.

destruction, ruin

''It was a terrible crash: both cars were total losses

(engineering) electricity of kinetic power expended without doing useful work

The inefficiency of many old-fashioned power plants exceeds 60% loss''' before the subsequent ' losses during transport over the grid

Noun

(uncountable) Inadequacy or incompleteness.

* {{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)

, chapter=17 citation , passage=The face which emerged was not reassuring. […]. He was not a mongol but there was a deficiency of a sort there, and it was not made more pretty by a latter-day hair cut which involved eccentrically long elf-locks and oiled black curls.}}

(countable) An insufficiency, especially of something essential to health.

* {{quote-magazine, date=2013-08-31, volume=408, issue=8851, magazine=(The Economist)

, title= Promotion and self-promotion , passage=One of academia’s deficiencies is that, though its lecture halls and graduate schools are replete with women, its higher echelons are not. Often, this is seen as a phenomenon specific to the sciences. … In fact, the disparity applies to the whole grove. Another report from 2006, by the American Association of University Professors, found the same ratio in the faculties of arts, humanities and social science, too.}}

(geometry) The amount by which the number of double points on a curve is short of the maximum for curves of the same degree.

(geometry) The codimension of a linear system in the corresponding complete linear system.