tube set tube-scraping • tube-shaped · · · Info · Synonyms · Characters · · tube set · · Text Common · · Latin · · Scripts 8 · · Length Synonyms · · · tube · · Synonym 1 tubing · · Synonym 2 vacuum tube · · Synonym 3 thermionic vacuum tube · · Synonym 4 thermionic tube · · Synonym 5 electron tube · · Synonym 6 thermionic valve · · Synonym 7 pipe · · Synonym 8 tube-shaped structure · · Synonym 9 metro · · Synonym 10 underground · · Synonym 11 subway system · · Synonym 12 subway · · Synonym 13 Characters · · space U+0020 b latin small letter b U+0062 e latin small letter e U+0065 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075