線せん条じょう痕こん

せ

ん

じょ

う

こ

ん

Meanings

1

noun

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.

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.

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.

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.

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.