C1adjectiveformalacademicscience
US/ˌlɑːn.dʒəˈtuː.dɪ.nəl/
UK/ˌlɒn.dʒɪˈtjuː.dɪ.nəl/
following the same people or things over a long period of time
In context
The longitudinal study followed 5,000 children from birth to age twenty.
Longitudinal data show how people's habits change as they grow older.
A longitudinal survey can reveal long-term effects that short tests miss.
Words that go with longitudinal
adjective + noun
- longitudinal studyThe longitudinal study lasted over thirty years.
- longitudinal dataLongitudinal data help researchers track change.
- longitudinal researchLongitudinal research is expensive but valuable.
- longitudinal surveyThe longitudinal survey began in 1990.
- longitudinal analysisA longitudinal analysis of test scores showed steady progress.