# Summand vs Subadditive - What's the difference?

## As a noun summand

is something which is added or summed; for example in 1+2=3'' the summands are ''1'' and ''2'' which form the sum, ''3 .

(of a function) such that the image of a sum is at most the sum of the images of the summands.

# summand

## English

### Noun

(en noun)
• Something which is added or summed; for example in 1+2=3'' the summands are ''1'' and ''2'' which form the sum, ''3 .

* addition, summation: (augend) + (addend) = (summand) + (summand) = (sum, total) * subtraction: (minuend) ? (subtrahend) = (difference) * multiplication: (multiplier) × (multiplicand) = (factor) × (factor) = (product) * division: (dividend) ÷ (divisor) = (quotient), remainder left over if divisor does not divide dividend

#### Synonyms

• The square-root function is subadditive under addition because $\sqrt\left\{a+b\right\}\le\sqrt a+\sqrt b$.