longitudinal
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.lon·gi·tu·di·nal
adjective \ˌlän-jə-ˈtüd-nəl, -ˈtyüd-, -ˈt(y)ü-dən-əl, British also ˌläŋ-gə-\Definition of LONGITUDINAL
1
: placed or running lengthwise
2
: of or relating to length or the lengthwise dimension
3
: involving the repeated observation or examination of a set of subjects over time with respect to one or more study variables
— lon·gi·tu·di·nal·ly adverb
See Examples of LONGITUDINAL
- 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
First Known Use of LONGITUDINAL
15th century
lon·gi·tu·di·nal
adjective \ˌlän-jə-ˈt(y)üd-ən-əl, -nəl, British also ˌläŋ-gə-ˈtyüd-\ (Medical Dictionary)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>
—lon·gi·tu·di·nal·ly \-ē\ adverb
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