Of any system where all gains are offset by exactly equal losses.

A Cantonese-style meal traditionally eaten in the morning or early afternoon, comprising tea and food typically placed in small steamer baskets or on small plates, and often served from carts that move around from table to table in a restaurant.

(transitive, intransitive) To produce a total by adding. / (transitive, intransitive) To summarize.

(game theory) of a situation in which there is a net loss

A relatively large single payment of money often paid and received instead of, or in addition to, a sequence of smaller payments.

(arithmetic) An empty sum.

(arithmetic) The result of adding no numbers, conventionally defined to equal zero.

Third-person singular simple present indicative form of sum up

present participle of sum up

A summary of the main points, especially (law) a judge's recapitulation of the evidence given to a jury before it withdraws to consider its verdict.