All the words and phrases of a language, or of a particular subject or person. It can also mean a dictionary, especially of an ancient language.
From Greek *lexikon (biblion)* meaning “book of words,” from *lexis* (word) and *legein* (to say). It entered English through scholarly Latin.
You don’t just speak a language; you carry your own personal lexicon—your unique set of known words and meanings. Two people may share a language but still misunderstand each other because their inner lexicons don’t fully match.
Complete word intelligence in one call. Free tier — 50 lookups/day.