approximation

noun

ap·​prox·​i·​ma·​tion ə-ˌpräk-sə-ˈmā-shən 

1

: the act or process of drawing together

2

: the quality or state of being close or near

an approximation to the truth

an approximation of justice

3

: something that is approximate

especially : a mathematical quantity that is close in value to but not the same as a desired quantity

approximative

ə-ˈpräk-sə-ˌmā-tiv 

adjective

Examples of approximation in a Sentence

This isn't an exact figure but I think it's a good approximation of what the land is worth.

The color of the paint isn't the exact same color as the vase, but it's a close approximation.

Recent Examples on the Web

Biographical jukebox musicals on tour inevitably lose steam when merely adequate casting serves up a bland approximation in place of superstar performance. —Christopher Smith, Oc Register, 30 July 2025

Deliveries are the closest approximation of EV sales reported by Tesla but aren’t precisely defined in its shareholder communications. —Lora Kolodny, CNBC, 23 July 2025

Before any ride, cyclists can enter their weight, cadence, average speed, mileage, terrain, wind speed, and other factors to find out a near-exact approximation of how long their Bosch battery will last. —Stephanie Pearson, Wired News, 19 July 2025

All these points are measured using proprietary technology, precise photography as opposed to renderings, and real-time performance testing, free of any approximations or simulations. —Kyle Roderick, Forbes.com, 26 July 2025

Word History

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for approximation

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

Kids Definition

approximation

noun

ap·​prox·​i·​ma·​tion ə-ˌpräk-sə-ˈmā-shən 

1

: a coming near or close (as in value)

2

: something approximate

especially : an estimate or figure that is almost exact