longitudinal /ˌlɑːnʤəˈtuːdənəl/ Brit /ˌlɒnʤəˈtjuːdənəl/ adjective /ˌlɑːnʤəˈtuːdənəl/ Brit /ˌlɒnʤəˈtjuːdənəl/
adjective
Learner's definition of LONGITUDINAL
always used before a noun
1
: placed or going along the long side of something纵的;纵向的 2
: of or relating to longitude经度的 3
: done by observing or examining a group of people or things over time to study how one or two particular things about them change纵观的;纵向的