Cite this Entry
“Diphasic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diphasic. Accessed 12 Jul. 2025.
Copy CitationMedical Definition
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share