subtractive
/səbˈtræk.tɪv/ (bre, ipa) · /səbˈtræk.tɪv/ (ame, ipa) · /səb-ˈtrak-tiv How to pronounce subtractive (audio)/ (ame, mw)
subtractive — adjective
- subtractivepositive
- more subtractivecomparative
- most subtractivesuperlative
1. connected to the arithmetic operation in which one number or quantity is taken a
connected to the arithmetic operation in which one number or quantity is taken away from another to find the difference.
Manuela taught her younger brother the basic subtractive method for solving simple equations.
collocation: subtractive method
The exam contained several subtractive problems that required removing one number from another.
domain: arithmetic problems
Nora learned that addition and subtractive operations are opposites in basic arithmetic.
Andrew used subtractive reasoning to check his answers by working backwards from the result.
- minus
more common in everyday speech for the same operation ('minus sign', 'minus calculation')
- additive
refers to the operation of adding rather than taking away
文法句型
subtractive + noun (operation, process, method)
用法筆記
This sense is used almost exclusively in mathematics or arithmetic teaching contexts. It contrasts with 'additive', which refers to the operation of adding.
2. related to the act of removing a part, element, or substance from a larger whole
related to the act of removing a part, element, or substance from a larger whole, rather than adding something new.
The factory uses a subtractive process to remove impurities from the raw oil.
collocation: subtractive process
Stefan said the subtractive stage of the experiment removes liquid through a filter.
pattern: subtractive + stage + of + noun
Dewi chose a subtractive editing approach, cutting her essay from five pages to just three.
Walid applied a subtractive technique to carve the statue from a single block of stone.
- reductive
similar meaning of reducing by removal, but 'reductive' often has a critical tone (oversimplifying)
- additive
involves building up or adding elements rather than removing them
文法句型
subtractive + noun (process, stage, step, technique)
用法筆記
Often used in manufacturing, chemistry, and editing contexts where materials or content are removed. Contrasts with 'additive' approaches that build up rather than take away.
常見錯誤
3. becoming smaller in amount, degree, or significance through gradual loss or thro
becoming smaller in amount, degree, or significance through gradual loss or through combination with other things over time.
The subtractive effect of inflation means each dollar buys less food than last year.
collocation: subtractive effect
Kemi noticed a subtractive pattern in her savings as she paid for tuition each semester.
The subtractive colour process makes mixed pigments darker than the original shades.
The old wooden fence showed a subtractive change as the weather wore it thin.
- diminishing
more common in everyday language for gradual decrease, but less technical
- declining
focuses on downward trend rather than removal by combination
- accumulative
involves building up or increasing through addition
- additive
in colour theory, additive mixing (light) produces brighter colours
文法句型
subtractive + noun (effect, change, pattern, process)
用法筆記
Common in colour theory (subtractive colour mixing — mixing paints makes darker colours) and in discussions of economic or resource decline. Distinguish from sense 2 by the element of gradual or combined change over time rather than a single removal action.