掌紋

1. Origins, structure, and basic meaning

• Structure: The written form is 掌紋, read しょうもん. Elements for palm and pattern combine to denote the line pattern of a palm or its printed impression.
• Basic usage: 掌紋が残る describes an impression left on paper, while 掌紋を比較する describes comparing collected patterns through images.

2. Common pitfalls and similar expressions

• A palm print made with paint
  • A paint-covered hand leaves a clearly visible palm print on paper. Example: 絵の具を付けた手を紙に押すと掌紋がくっきり残った。 — Pressing the painted hand onto paper left a clear palm print.
• Image comparison of collected prints
  • Collected palm patterns are compared by means of images. Example: 研究者は採取した掌紋を画像で比較した。 — Researchers compared images of the collected palm prints.