lexicon
/ˈɫɛksɪˌkɑn/
the vocabulary of a language; a mental dictionary of words
lexicon in a sentence
“Her lexicon expanded dramatically after a year of reading.”
Origin of lexicon
Greek lexikon (word book), from lexis (word)
Related Words
phoneme
the smallest unit of sound that distinguishes meaning
morpheme
the smallest meaningful unit in a language
semantics
the study of meaning in language; what words and sentences signify
syntax
the rules governing how words combine into phrases and sentences
pragmatics
how context influences the interpretation of meaning
morphology
the study of word formation and internal structure