Function: noun

Etymology: Late Greek lexikon, from neuter of lexikos of words, from Greek lexis word, speech, from legein to say — more at LEGEND

1 : a book containing an alphabetical arrangement of the words in a language and their definitions : DICTIONARY

2 a : the vocabulary of a language, an individual speaker or group of speakers, or a subject b : the total stock of morphemes in a language

3 : REPERTOIRE, INVENTORY

“antidisestablismentarianism”

which refers to the policy of a parliamentary party in the 19th century who were opposed to the “disestablishment’ of the Anglican Church. At that time Anglicanism was the official religion.