Definition of well graded in US English:

well graded

adjective

US
  • 1Of a road, track, etc.: having easy or gentle gradients.

  • 2Organized into appropriate or suitable grades; thoroughly or judiciously graded.

Origin

Early 19th century. From well + graded.

Pronunciation

well graded

/ˌwɛl ˈɡreɪdɪd/