diphasic

adjective
di·​pha·​sic | \ (ˌ)dī-ˈfā-zik How to pronounce diphasic (audio) \

Definition of diphasic

: having two phases

First Known Use of diphasic

1881, in the meaning defined above

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The first known use of diphasic was in 1881

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diphasic

adjective
di·​pha·​sic | \ (ˈ)dī-ˈfā-zik How to pronounce diphasic (audio) \

Medical Definition of diphasic

: 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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