المعجم الوسيط is an Arabic lexicon published by the Arabic Language Academy in Cairo in 1998, consisting of two parts and 1900 pages. This lexicon is one of the most important means of providing readers and intellectuals with the linguistic materials they need in a clear and accessible style. It includes precise scientific definitions of things, new terms, and modernized vocabulary used in various fields of science and the arts.

The dictionary is arranged alphabetically and follows a specific methodology. It prioritizes verbs over nouns, abstract verbs over concrete verbs, sensory effects over mental senses, and necessary verbs over transitive verbs. The dictionary also includes citations from the Quran, hadith, and Arabic proverbs to explain the meanings of words.

This comprehensive dictionary is an indispensable tool for anyone seeking to improve their Arabic vocabulary and language skills.