increment

n. increase, addition; growth; gain, profit

An increment is an increase, either of some fixed amount, for example added regularly, or of a variable amount. For example, a salary may receive an annual increment. A decrease would rather be called a decrement.Incremental may also refer to gradual change as opposed to massive, instant change.
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Noun
1. a process of becoming larger or longer or more numerous or more important; "the increase in unemployment"; "the growth of population"
(synonym) increase, growth
(antonym) decrease, decrement
(hypernym) process
(hyponym) accession
2. the amount by which something increases; "they proposed an increase of 15 percent in the fare"
(synonym) increase
(hypernym) amount
(hyponym) amplification, gain

n. increment

(n.)
The increase of a variable quantity or fraction from its present value to its next ascending value; the finite quantity, generally variable, by which a variable quantity is increased.
  

(n.)
The act or process of increasing; growth in bulk, guantity, number, value, or amount; augmentation; enlargement.
  

(n.)
Matter added; increase; produce; production; -- opposed to decrement.
  

(n.)
An amplification without strict climax,