- To fluctuate is defined as to change in amount or rise and fall.
An example of fluctuate is when a temperature goes from hot to cold to hot.
fluctuate definition by Webster's New World
- to move back and forth or up and down; rise and fall; undulate, as waves
- to be continually changing or varying in an irregular way: prices fluctuated wildly
Origin: ; from Classical Latin fluctuatus, past participle of fluctuare ; from fluctus, a flowing, wave ; from past participle stem of fluere, to flow ; from Indo-European an unverified form bhleu-, to swell up, flow (from source bluster) ; from base an unverified form bhel-, to swell up from source ball
fluctuate definition by American Heritage Dictionary
verb fluc·tu·at·ed, fluc·tu·at·ing, fluc·tu·ates verb, intransitive
- To vary irregularly. See Synonyms at swing.
- To rise and fall in or as if in waves; undulate.
Origin: Latin flūctuāre, flūctuāt-, from flūctus, a flowing, from past participle of fluere, to flow; see bhleu- in Indo-European roots.
- flucˈtu·ant adjective
- flucˌtu·aˈtion noun