Aus·tral·a·sia 
(ô′strə-lāzhə)
(ô′strə-lāzhə)1. The islands of the southern Pacific Ocean, including Australia, New Zealand, and New Guinea.
2. Broadly, all of Oceania.
- subsoil
- subsoiler
- subsolar
- subsonic
- subsp.
- subspecialist
- subspecialization
- subspecialize
- subspecialty
- subspecies
- subspecific
- subst.
- substage
- substance
- substance abuse
- substance abuser
- substance P
- substance use disorder
- substandard
- substantia gelatinosa
- substantial
- substantiality
- substantially
- substantialness
- substantia nigra