eudiometer /ū-di-omˈi-tər/

An apparatus for gas analysis, a graduated tube holding the gas over mercury, usu with wires for sparking

• direct cost
• direct costs
• direct current
• direct currents
• direct damages
• direct data capture
• direct debit
• direct debits
• direct discourse
• direct discourses
• direct drilling
• directed
• directed-energy weapon
• directed-energy weapons
• directer
• directest
• direct-grant school
• direct-grant schools
• directing
• direct injection
• direction
• directional
• directional aerial
• directional aerials
• directional drilling