directional
adj. B2 Upper Intermediate US //daɪˈɹɛkʃɪnəɫ// UK //daɪɹˈɛkʃənəl// di·rec·tion·al
adj. describing something that shows or relates to a direction. You use it for signs, instructions, or movements that tell you where to go.
adj. relating to, indicating, or determined by direction. Often used attributively before nouns such as 'signs', 'sense', or 'flow'.
Follow the directional signs to the exit.
The app uses your phone's sensors to provide accurate directional data.
In vector calculus, the directional derivative measures the rate of change of a function in a specific direction.
From direction + -al.