Palmar means: Palmar refers to the palm, the grasping end of the hand. Romans called the palma the “outstretched hand”.
(in Medical Dictionary)

What else does Palmar mean?

The term “volar”, by contrast, refers to the sole and palm. The Romans called it “vola”, which was the Roman word for the palm of the hand or the sole of one’s foot. “.
(in Medical Dictionary)

The palm of the hand, animal’s paw, and related terms.
(in Merlin Dictionary)