chiromancy

n. palmistry, palm-reading

Chiromancy or cheiromancy, (Greek cheir, “hand”; manteia, “divination”), is the art of characterization and foretelling the future through the study of the palm, also known as palmistry, palm-reading, chirology or hand analysis. The practice is found all over the world, with numerous cultural variations. Those who practice chiromancy are generally called palmists, palm readers, hand readers, or chirologists.
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Noun
1. telling fortunes by lines on the palm of the hand
(synonym) palmistry, palm reading, chirology
(hypernym) divination, foretelling, soothsaying, fortune telling
(derivation) chiromance

(n.)
The art or practice of foretelling events, or of telling the fortunes or the disposition of persons by inspecting the hand; palmistry.
  

Ostensible diagnosis based on the overall shape of hands, the shapes of parts of the hand (palms, fingers, and nails), the size of the mounts (cushions) of the palm, and skin texture. For example, small, flat nails supposedly indicate a predisposition to heart disease, particularly if their "moons" are barely visible; and nails with furrows allegedly indicate weakness of the lungs, especially if the nails are long, wide, and curved.