dictionary

B2 · Upper Intermediate Countable noun

n. a book that gives information about a specific subject, with topics listed from A to Z.

n. a specialized reference work or encyclopedia arranged alphabetically by subject matter.

日本語:辞典※

“She bought a dictionary of gardening to help identify the plants in her new yard.”

“The library recently acquired a comprehensive dictionary of architecture, covering styles from the classical era to the present day.”

C1 · Advanced Countable noun Computing Technical

n. a way of storing information in a computer where each piece of data has a unique name or key.

n. an associative array or collection of key-value pairs, where each unique key maps to a specific value.

日本語:辞書※

“The programmer used a dictionary to store the user's settings and their values.”

“In Python, a dictionary is an efficient way to retrieve data when the unique identifier is known but the index is not.”

B2 · Upper Intermediate Countable noun Humorous

n. a person who seems to know the meaning of every word or many facts.

n. a person regarded as a vast repository of information or vocabulary.

“My grandfather is a walking dictionary; he can tell you the history of almost any word.”

“The professor was a living dictionary of medieval history, capable of citing obscure dates and names without ever glancing at his notes.”

C2 · Proficiency Formal

v. to look for a word in a dictionary or to add a new word to one.

v. to search for a term in a reference work or to include a lexical item within a formal lexicon.

“The editors decided to dictionary the new slang term after it became popular nationwide.”

“The linguist spent years attempting to dictionary the dying dialect before its last native speakers passed away.”