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

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 Headroom With the wind tunnel drawing aggressive tumblehome and longitudinal tapers into their cockpits, many exotics leave little headroom for tall drivers. Eric Tingwall, Car and Driver, "Driving from the Middle of the Car Is About to Make a Comeback: Here Are the Pros and Cons," 20 Feb. 2018 The team used data from 262 adolescents taken from Dr. Luthar’s New England Study of Suburban Youth (NESSY), a longitudinal study of adolescents in high-achieving schools. Jennifer Breheny Wallace, WSJ, "The Right Way for Parents to Question Their Teenagers," 23 Nov. 2018 For example, the AAP cites one longitudinal study published in 1995. Carolyn L. Todd, SELF, "Here’s What You Need to Know About Using Marijuana While Pregnant or Breastfeeding," 12 Oct. 2018 Rumor is that the Explorer will revert to a longitudinal engine layout and come standard with rear-wheel drive, while all-wheel drive will remain available throughout the model line and is almost certain to come standard on the ST. Greg Fink, Car and Driver, "Ford Explorer ST Confirmed, Rear-Wheel Drive a Possibility," 15 Mar. 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

3 May 2019

Look-up Popularity

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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