1. Performing functions similar to those performed by lungs

See also: lung

• Asarum virginicum
• ASAT
• Asbat al-Ansar
• asbestos
• asbestos abatement
• asbestosis
• ASBO
• Ascaphidae
• Ascaphus
• Ascaphus trui
• ascariasis
• ascarid
• Ascaridae
• Ascaridia
• Ascaridia galli
• Ascaris
• Ascaris lumbricoides
• ascend
• ascendable
• ascendance
• ascendancy
• anvil
• Anwar el-Sadat
• Anwar Sadat
• anxiety