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Synonyms

yearlong

American  
[yeer-lawng, -long] / ˈyɪərˈlɔŋ, -ˈlɒŋ /
Or year-long

adjective

  1. lasting for a year.


yearlong British  
/ ˈjɪəˈlɒŋ /

adjective

  1. throughout a whole year

"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

Etymology

Origin of yearlong

First recorded in 1805–15; year + long 1

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.

They were divided into three groups for the yearlong intervention: baduanjin practice, self-directed exercise, or brisk walking.

From Science Daily • May 10, 2026

The U.N.’s yearlong inquiry, whose summary we have reviewed, found a “factual basis” for the alleged victim’s allegations and for allegations that Mr. Khan retaliated against ICC staff.

From The Wall Street Journal • Apr. 27, 2026

In the yearlong Phase 2b study, nearly 40% of patients who received Nektar’s treatment, rezpegaldesleukin, showed a 50% or better improvement in their severity of alopecia score, compared to 13.6% of placebo patients.

From Barron's • Apr. 20, 2026

Now, a yearlong government study has sparked a contentious new round of debate about the disappeared.

From Los Angeles Times • Apr. 6, 2026

Jesse Beams’s yearlong collaboration with Ernest Lawrence left him with a lasting impression of Lawrence’s inexhaustible vigor.

From "Big Science" by Michael Hiltzik

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