longitudinal
adjective /ˌlɒŋɡɪˈtjuːdənl/, /ˌlɒndʒɪˈtjuːdənl/
/ˌlɑːndʒəˈtuːdənl/
(specialist)- going downwards rather than across
- The plant's stem is marked with thin, green, longitudinal stripes.
- relating to the development of something over a period of time
- a longitudinal study of ageing
- connected with longitude
- the town’s longitudinal position