modification

noun

mod·​i·​fi·​ca·​tion ˌmä-də-fə-ˈkā-shən 

1

: the limiting of a statement : qualification

With some modifications this statement is true today.

—J. B. Conant

2

: mode entry 1 sense 3a

3

a

: the making of a limited change in something

… making the exactly minimum degree of modification to her institutions necessary to fit them to new conditions.

—John Strachey

also : the result of such a change

b

: a change in an organism caused by environmental factors

4

: a limitation or qualification (see qualification sense 1) of the meaning of a word by another word, by an affix, or by internal change

Synonyms of modification

• alteration
• change
• difference

Examples of modification in a Sentence

The program can be used on all computers without modification.

They passed the law with only a few minor modifications.

The weather required some major modifications to our travel plans.

Recent Examples on the Web

Former court jeweler Garrard takes credit for remodling the tiara in 1937, though CNN noted that none of the modifications were officially recorded. —Bailey Bujnosek, InStyle, 8 Jan. 2026

On Tuesday, the Crans-Montana municipality said that inspections of Le Constellation that included fire safety checks had been carried out in 2016, 2018 and 2019, and that modifications had been requested — but no issues with soundproofing measures had been raised. —Geir Moulson, Los Angeles Times, 6 Jan. 2026

The platform allows companies to create physics-accurate 3D models of products, processes or plants and simulate changes across time before making physical modifications. —Neetika Walter, Interesting Engineering, 6 Jan. 2026

Perhaps this moment in our personal and collective history calls for a modification of the Golden Rule in either version—one that values simplicity and elegance over conditional reciprocity. —Michael Isaacson, Sun Sentinel, 6 Jan. 2026

Word History

First Known Use

1603, in the meaning defined at sense 1

Phrases Containing modification

• behavioral modification
• behavior modification
• genetic modification
• pre-modification

Rhymes for modification

• abbreviation
• abomination
• acceleration
• accentuation
• accommodation
• accreditation
• acculturation
• accumulation
• acetylation
• adjudication
• administration
• adulteration

Kids Definition

modification

noun

mod·​i·​fi·​ca·​tion ˌmäd-ə-fə-ˈkā-shən 

1

a

: the act of modifying

b

: the state of being modified

2

: the limiting of a statement : qualification

3

: the result of modifying : partial change

modification of plans

Medical Definition

modification

noun

mod·​i·​fi·​ca·​tion ˌmäd-ə-fə-ˈkā-shən 

1

: the act or result of modifying something

2

: a change in an organism that is not inherited and that is caused by the influence of its environment