tessera /tesˈə-rə/

1. One of the small pieces of which a mosaic is made
2. A token or ticket made usu of wood or bone (ancient hist)
3. A password. See also tessara-

• cypselae
• Cyrenaic
• Cyrillic
• cyst
• cystectomies
• cystectomy
• cysteine
• cysteines
• cystic
• cysticerci
• cysticercoses
• cysticercosis
• cysticercus
• cystic fibrosis
• cystid
• cystidean
• cystideans
• cystids
• cystiform
• cystine
• cystines
• cystinoses
• cystinosis
• cystinuria
• cystinurias