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“Diphasic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diphasic. Accessed 13 Jul. 2025.
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diphasic
adjective
di·pha·sic
(ˈ)dī-ˈfā-zik 
: having two phases: as
a
: exhibiting a stage of stimulation followed by a stage of depression or vice versa
the diphasic action of certain drugs
b
: relating to or being a record of a nerve impulse that is negative and positive
a diphasic action potential
compare monophasic sense 1, polyphasic sense 1
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