内線(ないせん)

ないせん
noun
extension (phone), internal line
communication
1. phone extension, internal line
An internal telephone line within an organization, or the extension number used to reach a specific phone.
内線(ないせん)番号(ばんごう)は何番(なんばん)ですか。
What is your extension number?
内線(ないせん)で担当者(たんとうしゃ)に繋(つな)ぎます。
I'll connect you to the person in charge via the internal line.
Business context
内線(ないせん)1234番(ばん)にかけてください。
Please call extension 1234.
2. civil war, internal conflict
A war or armed conflict within a country.
その国(くに)は長(なが)い内線(ないせん)に苦(くる)しんだ。
That country suffered through a long civil war.
内線(ないせん)が終(お)わった後(あと)、国(くに)の復興(ふっこう)が始(はじ)まった。
After the civil war ended, the country's reconstruction began.
内線(ないせん)により多(おお)くの人々(ひとびと)が国外(こくがい)に逃(に)げた。
Many people fled the country due to the civil war.

Usage: 内線(ないせん) most commonly refers to telephone extensions in offices and organizations. The second meaning (civil war) is used in historical and political contexts.

Common patterns

Similar words

  • 内線(ないせん) - internal line (within organization)
  • 外線(がいせん) - external line (outside calls)

Related Words

Antonym: 外線(がいせん) (external line)
Homophone: 内戦(ないせん) (civil war)
Related: 市外局番(しがいきょくばん) (area code)
Compare: 局番(きょくばん) (telephone exchange number)
general
Added 2026.1.14 9:58 · Revised 2026.9.2 12:02
04000/04279_naisen