prefix

接頭辞

単語の頭に付けて意味を変える文字や文字のまとまり。

やさしい英語で： A letter or group of letters added at the start of a word to change its meaning.

• The prefix un makes some words negative.
• We learned three prefixes today.
• Can you add a prefix to this word?

類義語： forefix, prefixum

よく使う表現： negative prefix, add a prefix, the prefix un

電話番号の接頭番号

電話番号の先頭にあり、地域や番号の種類を示す数字。

やさしい英語で： Numbers at the start of a phone number that show its area or type.

• This prefix identifies mobile phone numbers.
• Which prefix do I dial for international calls?
• Both numbers have the same prefix.

類義語： dialling code

よく使う表現： telephone prefix, country prefix, a prefix of

接頭部分

文字や数字、記号が並んだものの最初の部分。

やさしい英語で： The first part of a series of letters, numbers, or other written signs.

• These filenames share a prefix.
• The program checks the prefix of each string.
• Remove the first two characters of the prefix.

よく使う表現： string prefix, common prefix, matching prefix

前に付ける

何かを別のものの先頭に付ける。

やさしい英語で： To put something at the beginning of something else.

• Prefix each name with a title.
• She prefixed her statement with an apology.
• The system prefixes a code to every filename.

使い方： prefix something with something (Prefix the number with the country code.); prefix something to something (They prefixed a warning to the report.)

類義語： prepend

よく使う表現： prefix something with, prefix to something

前もって決める

物事が起こる前に、内容を決めたり手配したりする。

やさしい英語で： To decide or arrange something before it happens.

• They prefixed a date for the meeting.
• The council had prefixed the hour of departure.
• We must prefix the time before sending invitations.

類義語： fix, set

よく使う表現： prefix a date, prefix the time