2. Initialism. Extraterrestrial intelligence. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of ETI
ESRF ESS EST ESTA ESTJ ESTP ESWL ET ET-743 ET743 | ETA ETAAC ETD ETEC ETH ETI (current term) ETL ETLA ETOPS ETP | ETS ETSI ETV EU EULA EUV EVA EVM EVOO EVP |