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  • in-line
    in-line
    adjective
    (of an internal-combustion engine) having the cylinders ranged side by side in one or more rows along the crankshaft.
  • in line
    in line

    Also, in line with . In conformity or agreement; within ordinary or proper limits. For example, The new policy was intended to keep prices in line with their competitors , or It's up to the supervisor to keep the nurses in line . Also see fall in line .

Synonyms

in-line

American  
[in-lahyn, in-lahyn] / ˌɪnˈlaɪn, ˈɪnˌlaɪn /

adjective

  1. (of an internal-combustion engine) having the cylinders ranged side by side in one or more rows along the crankshaft.


in-line British  

adjective

  1. denoting a linked sequence of manufacturing processes

  2. denoting an internal-combustion engine having its cylinders arranged in a line

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

in line Idioms  
  1. Also, in line with . In conformity or agreement; within ordinary or proper limits. For example, The new policy was intended to keep prices in line with their competitors , or It's up to the supervisor to keep the nurses in line . Also see fall in line .

  2. Also, on line . Waiting behind others in a row or queue. For example, The children stood in line for their lunches , or There were at least 50 persons on line for opera tickets .

  3. in line for . Next in order for, as in He is next in line for the presidency . All of these terms employ line in the sense of “an orderly row or series of persons or objects,” a usage dating from the 1500s.


Etymology

Origin of in-line

First recorded in 1925–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“Results were relatively in-line with our revised forecast post-preannouncement, with better than expected guidance for the full year, but IBM now needs to execute to build investor confidence in the outlook,” strategists at J.P.

From MarketWatch Jul. 23, 2026

The other time traveler is the engine: a naturally aspirated, 2.0-liter in-line four.

From The Wall Street Journal May 23, 2026

When Clarke named his Euro 2024 squad, there were few surprises - in-line with most of his selections - but the omission of Craig Gordon was met with some shock.

From BBC May 18, 2026

Although the medical technology company’s in-line first-quarter revenue and $500 million buyback will reassure investors, its results aren’t seen as derisking guidance at this stage, RBC says.

From The Wall Street Journal May 6, 2026

It was the ‘Bullet N°2’ racing car, the first with an eight-cylinder, in-line engine, according to Eugene Hammond.

From "The Teacher’s Funeral" by Richard Peck

They are in line for their eighth playoff appearance in nine years.

From Los Angeles Times Aug. 2, 2026

In its April report, HRW called on the Saudi authorities to immediately halt executions of Ethiopian migrants and ensure all cases were handled in line with international law.

From BBC Jul. 31, 2026

In a post on X,, external Abbott wrote: "Today, following a process conducted in line with party rules and approved by the independent review process I have been readmitted to the Labour party."

From BBC Jul. 30, 2026

Consumer spending climbed by 0.3% last month, in line with expectations.

From The Wall Street Journal Jul. 30, 2026

Since I brought my lunch, I didn’t have to wait in line for food like some of the other kids.

From "Root Magic" by Eden Royce

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