D defs.my
Entry 1 sense Webster, 1913

Midrib

/mĭd'-rĭb/ · Mid·rib · IPA /ˈmɪdrɪb/
01 n. A continuation of the petiole, extending from the base to the apex of the lamina of a leaf.
  1. 1.
    A continuation of the petiole, extending from the base to the apex of the lamina of a leaf.(Bot.)