Biphasic, meaning having two phases, may refer to:
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Phase (matter), in the physical sciences, a biphasic system, e.g. one involving liquid water and steam
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Biphasic sleep, a nap or siesta in addition to the usual sleep episode at night
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Phase (pharmacology)
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Biphasic disease
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Biphasic formulations of oral contraceptive pills
See also
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Biphase (disambiguation)
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Phase (disambiguation)