The term ET is represented in the crossword solutions by ALIA (4 letters), ALII (4 letters), SEO (3 letters), ETALI (5 letters), VOILA (5 letters), and CETERA (6 letters). ALIA stands for 'A Little I Ate', ALII stands for 'A Little I Iced', SEO stands for 'Search Engine Optimization', ETALI stands for 'Et Alibi', VOILA stands for 'Voilà', and CETERA stands for 'Cetera'. ALIA and ALII are both acronyms, while SEO, ETALI, VOILA, and CETERA are all words derived from Latin. SEO is a type of digital marketing strategy used to increase website visibility on search engine results pages, while ETALI, VOILA, and CETERA are all interjections used to express surprise or satisfaction.