字典的英文复数是dictionaries。

A dictionary is a reference book that contains an alphabetically arranged list of words with information about their meanings, pronunciations, and origins. It is an essential tool for anyone who wants to improve their vocabulary or communicate effectively in a foreign language.

When we refer to more than one dictionary, we use the plural form of the word. The plural of dictionary is dictionaries. For example, 'I have two dictionaries on my bookshelf' or 'the libraries have many dictionaries in different languages.'

Dictionaries have been around for centuries and have evolved over time to meet the changing needs of users. Today, there are many types of dictionaries available, including print, online, and mobile versions. Some dictionaries are specialized for specific fields, such as medicine or law, while others are general-purpose dictionaries that cover all areas of language.

In conclusion, the plural form of dictionary is dictionaries. Whether you prefer a traditional print version or a modern digital version, a dictionary is an important tool for anyone who values language and communication.