前線

• 読み: ぜんせん
• ローマ字: zensen
• 漢字の分解: 前 (zen) — front, before; 線 (sen) — line, boundary
• 発音: /zeɴ.seɴ/

意味

Front (weather). A boundary between two air masses of different temperature or humidity.

A noun with two primary meanings: a weather front (meteorological) and a battle front (military). In weather contexts, it refers to the boundary where warm and cold air masses meet, causing rain or storms. Common compounds include 梅雨前線 (tsuyu zensen, the seasonal rain front) and 寒冷前線 (kanrei zensen, cold front). The meteorological usage is very common in daily weather reports.

例文

1. 前線の影響で今週は雨が続くでしょう。
2. 梅雨前線が本州付近に停滞している。
3. 前線が通過したあと、気温が急に下がった。

使い方ガイド

場面: weather forecasts, meteorology, news

トーン: neutral

起源と歴史

From Sino-Japanese: 前 (zen, front/before) + 線 (sen, line). Originally a military term meaning 'front line,' later adopted by meteorology to describe the boundary line between air masses.

文化的背景

時代: Modern

世代: All ages

社会的背景: Universal