polyphasic

adjective poly·pha·sic \ˌpä-lē-ˈfā-zik\

Definition of POLYPHASIC

: consisting of two or more phases

1922

Medical Dictionary

adjective poly·pha·sic \-ˈfā-zik\

: of, relating to, or having more than one phase <polyphasic evoked potentials>—compare diphasic b, monophasic 1

: having several periods of activity interrupted by intervening periods of rest in each 24 hours <an infant is essentially polyphasic>

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