1. Designating sound transmission or recording or reproduction over a single channel
   - mono, monophonic

See also: monaural

• aparejo
• apart
• apartheid
• aparthotel
• apartment
• apartment building
• apartment house
• apartotel
• apatetic coloration
• apathetic
• apathetically
• apathy
• apatite
• apatosaur
• apatosaurus
• Apatosaurus excelsus
• Apatura
• Apatura iris
• APC
• ape
• ape-man
• Apeldoorn
• apelike
• Apennines
• aper