diatessaron /dī-ə-tesˈə-ron, -rən/

1. An arrangement of the four Gospels as a single narrative, esp the earliest, that of Tatian (prob 110–180AD)
2. The interval of a fourth (music)
3. A medicine of four ingredients

• thirdings
• third intention healing
• Third International
• thirdly
• third man
• Third market
• third men
• third order
• third orders
• third parties
• third party
• third-party
• third person
• third-programme
• third rail
• third rails
• third-rail system
• third-rate
• third reading
• Third Reich
• thirds
• third sector
• third sectors
• thirdsman
• thirdsmen