Refers to the act of looking up information in a reference source such as a dictionary, address list, or database. Often used in technical or clerical contexts.
I look up a word in the dictionary.
It took time to look up the address from the roster.
Standard kanji spelling for this term.
Abbreviated spelling; less common but still used.
Formed in contrast with 逆引き: 正 indicates lookup in the ordinary direction, such as finding an entry from its headword.