What does augend mean?
An augend is the number to which another number is added in an arithmetic addition. In the expression 7 + 5 = 12, the 7 is the augend and the 5 is the addend, while 12 is the sum. The word comes from the Latin augere, meaning 'to increase', so it literally denotes 'the thing to be increased'. Although mathematicians sometimes treat all numbers in a sum symmetrically as addends or summands, the augend/addend distinction remains valuable in computing, where the order of operands can matter — for example, when one value sits in an accumulator register awaiting modification. Because of this technical niche, augend appears mostly in mathematics education, programming documentation, and discussions of processor architecture rather than in casual conversation, making it a precise but little-known piece of arithmetic vocabulary.
nounA quantity to which another quantity is added in an addition operation.
- The number to which another number (the addend) is added in an arithmetic addition.
"In the sum 7 + 5 = 12, the number 7 serves as the augend and 5 as the addend."
"When adding 9 + 4 on paper, the 9 is written first as the augend."
"The processor's instruction loaded the augend into the accumulator before performing the addition."
Standard English plural, formed regularly with -s.
"The program stored both augends in memory before executing the vector addition."
Every time you add two numbers, one secretly plays the starring role — the augend — and almost nobody outside computer science knows its name.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of augend
Augend derives from the Latin verb augere, meaning 'to increase' or 'to grow', combined with the gerundive ending -nd that conveys necessity — literally 'that which is to be increased'. It entered English usage in the context of arithmetic terminology alongside 'addend', which was formed by analogy. The same Latin root gives us related English words such as 'augment' and 'August', the latter named for a title meaning 'venerable' or 'increasing' applied to the emperor Augustus.
How augend is actually used
Augend is a technical term confined chiefly to mathematics, computing, and formal descriptions of arithmetic. It is rare in everyday speech; most people simply refer to both numbers in a sum as 'addends' or 'terms'.
Easily confused with augend
The addend is the quantity being added to the augend; the augend is the quantity to which something is added.