Meaning of LONGITUDINAL in English

LONGITUDINAL

/ ˌlɒŋgɪˈtjuːdɪnl; ˌlɒndʒɪ-; NAmE ˌlɑːndʒəˈtuːdnl/ adjective ( technical )

1.

going downwards rather than across :

The plant's stem is marked with thin green longitudinal stripes.

2.

concerning the development of sth over a period of time :

a longitudinal study of aging

3.

connected with longitude :

the town's longitudinal position

►  lon·gi·tu·din·al·ly / -nəli; NAmE / adverb

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.