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Old English flowan "to flow, stream, issue; become liquid, melt; abound, overflow" (class VII strong verb; past tense fleow, past participle flowen), from Proto-Germanic *flo- (cf. Middle Dutch vloyen, Dutch vloeien "to flow," Old Norse floa "to deluge," Old High German flouwen "to rinse, wash"), probably from PIE *pleu- "flow, float" (see pluvial). The weak form predominated from 14c., but strong past participle flown is occasionally attested through 18c. Related: Flowed; flowing.
mid-15c., "action of flowing," from flow (v.). Meaning "amount that flows" is from 1807. Flow chart attested from 1920.
v. flowed, flow·ing, flows
To move or run smoothly with unbroken continuity.
To circulate, as the blood in the body.
The smooth motion characteristic of fluids.
The volume of fluid or gas passing a given point per unit of time.
To menstruate: am flowing, so can't do inverted poses