The term 'TOTAL VOCABULARY' can be broken down into two words, 'TOTAL' and 'VOCABULARY'. The word 'TOTAL' is defined as the whole amount or quantity of something, while 'VOCABULARY' is a list of words and their definitions. The crossword solution for this term is 'Lexis', which is a branch of linguistics that studies the structure and development of words and phrases in a language. Lexis is also used to refer to the TOTAL number of words and phrases in a language. Therefore, the crossword solution 'Lexis' for the term 'TOTAL VOCABULARY' refers to the TOTAL number of words and phrases in a language.