IPA: /ˈnɔrθˌiːstwərd/
KK: /nɔrˈθiːstwərd/
In the direction of the northeast.
The storm is moving northeastward, bringing heavy rain to the area.
In the direction of the northeast.
The wind blew northeastward, bringing cooler temperatures.
A direction or area that is toward the northeast.
The storm is moving in a northeastward direction, affecting several towns along the way.
Northeastward is formed from "northeast" (a combination of "north" from Old English *norð*, meaning the direction toward the North Pole, and "east" from Old English *ēast*, meaning the direction where the sun rises) and "-ward" (meaning in the direction of). The word "northeastward" means in the direction of the northeast.
Think of heading 'toward' ('-ward') the 'north' and 'east' directions — that's what northeastward means.