Biphasic
# Biphasic

Biphasic, meaning having two phases, may refer to:

* Phase (matter), in the physical sciences, a biphasic system, e.g. one involving liquid water and steam
* Biphasic sleep, a nap or siesta in addition to the usual sleep episode at night
* Phase (pharmacology)
* Biphasic disease
* Biphasic formulations of oral contraceptive pills
