approximate

American  

[uh-prok-suh-mit, uh-prok-suh-meyt] / əˈprɒk sə mɪt, əˈprɒk səˌmeɪt /

adjective

1. near or approaching a certain state, condition, goal, or standard.

2. nearly exact; not perfectly accurate or correct.

   The approximate time was 10 o'clock.

3. near; close together.

4. very similar; nearly identical.

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verb (used with object)

approximated, approximating

1. to come near to; approach closely to.

   to approximate an ideal.

2. to estimate.

   We approximated the distance at three miles.

3. to simulate; imitate closely.

   The motions of the stars can be approximated in a planetarium.

4. to bring near.

verb (used without object)

approximated, approximating

1. to come near in position, character, amount, etc.

approximate British  

adjective

1. almost accurate or exact

2. inexact; rough; loose

   only an approximate fit

3. much alike; almost the same

4. near; close together

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verb

1. (usually foll by to) to come or bring near or close; be almost the same (as)

2. maths to find an expression for (some quantity) accurate to a specified degree See accurate

Other Word Forms

• approximately adverb
• approximative adjective

Etymology

Origin of approximate

1400–50; late Middle English < Late Latin approximātus drawn near to, approached (past participle of approximāre ). See ap- ¹, proximate

Explanation

To approximate is to calculate the value of something based on informed knowledge. A computer program can approximate the value of a house based on square footage, number of rooms, year built, and other relevant factors. As a verb, approximate means "to estimate." Unlike the word guess, approximate implies the use of a logical or mathematical method. You might guess how tall a friend is based on the first number that comes to mind, but you could approximate his height by using your own height as a comparison. As an adjective, approximate can mean "near" or "close together." If your friend calls to say he’s at a location approximate to your house, she’s in your neighborhood.

Example Sentences

The $41-a-share cash payout represented a roughly 140% premium to Apellis’ Monday close, as well as an approximate 35% premium to the 52-week high.

From The Wall Street Journal • Apr. 1, 2026

Stout and slightly gruff, Dipper has a digital face that can approximate more than 40 expressions.

From Los Angeles Times • Mar. 6, 2026

Of the approximate 200 billionaires in California, several are reported to have cut ties with the state.

From Barron's • Mar. 2, 2026

Nine could not give an approximate start date.

From BBC • Feb. 24, 2026

By comparing tooth variation in Asian populations, Turner estimated the approximate rate at which the secondary characteristics in teeth evolved.

From "1491" by Charles C. Mann

Related Words

• estimated