線せん条じょう痕こん

せ

ん

じょ

う

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ん

Meanings

1

rifling marks; striations on a fired bullet

Technical forensic term for the spiral marks left on a bullet by the rifling inside a gun barrel.

We analyzed the rifling marks on the bullet found at the scene.

線せん条じょう痕こんの比ひ較かくから、使し用ようされた拳けん銃じゅうが特とく定ていされた。

The handgun used was identified through comparison of the striations.

弾だん道どう
弾道 refers to the trajectory of a bullet, while 線条痕 specifically refers to the physical marks left on the bullet itself.
ライフリング
ライフリング is the English loanword for the rifling process or grooves inside the barrel; 線条痕 is the resulting mark on the bullet.

線せん条じょう痕こん
Standard kanji spelling for forensic rifling marks.
旋せん条じょう痕こん
Alternate kanji spelling using 旋 (spin/turn) instead of 線 (line). Rarely used.

Compound of 線条 (linear streak) and 痕 (mark/trace). The alternate form 旋条痕 uses 旋 (spin) to emphasize the rotational origin of the marks.