longitudinal

adjective
lon·​gi·​tu·​di·​nal | \ ˌlän-jə-ˈtüd-nəl How to pronounce longitudinal (audio) , -ˈtyüd-, -ˈt(y)ü-dᵊn-əl, British also ˌläŋ-gə-\

Definition of longitudinal

1 : placed or running lengthwise The insect's back is black with yellow longitudinal stripes.
2 : of or relating to length or the lengthwise dimension the longitudinal extent of the building
3 : involving the repeated observation or examination of a set of subjects over time with respect to one or more study variables a longitudinal study of juvenile offenders over a period of five years

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Other Words from longitudinal

longitudinally adverb

Examples of longitudinal in a Sentence

The insect's body is black with yellow longitudinal stripes. calculating the longitudinal position of a ship a longitudinal study of career aspirations among girls from 5 to 17
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Recent Examples on the Web

The first federally funded longitudinal study of LGBT elders found that 51% of those who lived in private residences reported social isolation. CNN, "New York's new LGBT-friendly elder housing is a lifeline, but only for a few," 27 June 2019 Pickups, and most luxury and performance vehicles, tend to have longitudinal engines because the layout lends itself to more power, better handling and towing. Mark Phelan, Detroit Free Press, "2020 Ford Explorer's new RWD changes everything for the better," 18 June 2019 While retaining its core value proposition — longitudinal, relationship-based, coordinated care — primary care must differentiate into narrower, more manageable scopes of practice. STAT, "We were inspired to become primary care physicians. Now we’re reconsidering a field in crisis," 20 June 2019 So the Bridgestone engineers encircled the tire with a few thin, longitudinal channels, and lots of short, diagonal grooves leading to the tire’s shoulder. Nick Stockton, WIRED, "Bridgestone's New Tire Makes Driving Electric as Quiet as It Should Be," 5 June 2019 For the past 10 years, the University of Washington professor of social work and researcher has been conducting the first, national longitudinal study of aging members of the LGBTQ community called Aging with Pride. Nicole Brodeur, The Seattle Times, "Are LGBTQ seniors dying of loneliness? It’s possible, research says," 11 Apr. 2019 Instead, in a longitudinal survey of 662 men who provided semen samples between 2000 and 2017, those who reported ever using cannabis had significantly higher sperm count than those who had never smoked. Sarah Jacoby, SELF, "How Does Cannabis Actually Affect Sex?," 25 Mar. 2019 The longitudinal distance between the shallow end is 3.7 feet, whereas the deep end . . Popular Mechanics, "My Job at Coachella Inspired Me to Invent a Portable Swimming Pool," 30 Oct. 2018 Among individuals at least 50 years of age with knee OA [i.e osteoarthritis], running was not associated with longitudinal worsening knee pain or radiographically defined structural progression. Alex Hutchinson, Outside Online, "Running with Bad Knees Might Be OK After All," 25 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'longitudinal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of longitudinal

15th century, in the meaning defined at sense 2

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Statistics for longitudinal

Last Updated

12 Jul 2019

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Time Traveler for longitudinal

The first known use of longitudinal was in the 15th century

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More Definitions for longitudinal

longitudinal

adjective

English Language Learners Definition of longitudinal

: placed or going along the long side of something
: of or relating to longitude
: done by observing or examining a group of people or things over time to study how one or two particular things about them change

longitudinal

adjective
lon·​gi·​tu·​di·​nal | \ ˌlän-jə-ˈtü-dᵊn-əl How to pronounce longitudinal (audio) , -ˈtyü-\

Kids Definition of longitudinal

: placed or running lengthwise longitudinal stripes

Other Words from longitudinal

longitudinally adverb

longitudinal

adjective
lon·​gi·​tu·​di·​nal | \ ˌlän-jə-ˈt(y)üd-ᵊn-əl, -nəl, British also ˌläŋ-gə-ˈtyüd-\

Medical Definition of longitudinal

1 : of, relating to, or occurring in the lengthwise dimension a longitudinal bone fracture
2 : extending along or relating to the anteroposterior axis of a body or part a trypanosome which reproduces by longitudinal fission
3 : involving the repeated observation or examination of a set of subjects over time with respect to one or more study variables (as general health, the state of a disease, or mortality) a longitudinal study of heart transplant recipients over a five-year period

Other Words from longitudinal

longitudinally \ -​ē How to pronounce longitudinally (audio) \ adverb

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More from Merriam-Webster on longitudinal

Spanish Central: Translation of longitudinal

Nglish: Translation of longitudinal for Spanish Speakers

Britannica English: Translation of longitudinal for Arabic Speakers

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