What does summable mean?
Summable describes a number, quantity, set of values, or other mathematical item that can be added together to produce a total. The term is especially associated with mathematics, accounting, data processing, and financial or scientific software. For example, a spreadsheet may contain a summable column whose entries can be added automatically, while a programmer may write a function that accepts only summable values. The adjective is formed from the noun sum and the suffix -able, giving it the meaning “able to be summed.” Although logically understandable in many contexts, summable is less common in general speech than expressions such as “can be added” or “can be totaled.” It can also suggest that a value is suitable for inclusion in a larger calculation or aggregate, not merely that addition is mathematically possible.
adjectiveCapable of being summed; able to be added together to form a total.
- Capable of being added together to form a total.
"The curator identified the pieces that were summable without exceeding the collection limit."
"The spreadsheet contains several summable columns for calculating the quarterly totals."
"Only summable values can be passed to the ledger's balancing function."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does summable come from?
Summable combines the English noun sum with the productive suffix -able, meaning “capable of being” the thing expressed by the stem. The noun sum comes through Middle English from Latin summa, meaning “the highest part” or “total,” which also underlies related words such as summary, summation, and consummate. The English formation is thus transparent in both spelling and meaning: a summable thing is one that can be added to form a sum.
How summable is actually used
This is a relatively uncommon, chiefly mathematical and computational adjective. In everyday use, it may sound more technical than simply saying that a value can be added.