Definition of lateralward in US English:

lateralward

adverb

Anatomy Zoology
  • To the side; laterally, laterad; specifically in the direction away from the medial plane of the body.

adjective

Anatomy Zoology
  • Located in a lateral position; occurring or extending in a lateral direction.

Origin

Late 19th century; earliest use found in Journal of Morphology. From lateral + -ward.