tufa /tooˈfə, tūˈfə/

1. Calc-sinter (often calcareous tufa)
2. Tuff or other porous rock (obsolete)

• athrob
• athrocyte
• athrocytes
• athrocytoses
• athrocytosis
• athwart
• atilt
• atimies
• atimy
• atingle
• at intervals
• a-tishoo
• atishoo
• atishoos
• at issue
• at it
• at it like knives
• at its worst
• Ativan
• Atkins
• Atkins diet
• at knife-point
• ATL
• Atlantean
• Atlantes