Quartiles are the values that divide a list of numbers into quarters: 1  Put the list of numbers in order. 2  Then cut the list into four equal parts. 3  The Quartiles are at the cuts.
Revolve (verb) to turn or roll round on, or as on, an axis, like a wheel; to rotate, -- which is the more specific word in this sense. Revolve (verb) to move in a curved path round a center; as, the planets revolve round the sun. Revolve (verb) to pass in cycles; as, the centuries revolve. Revolve (verb) to return; to pass. Revolve (verb)
flashback (plural flashbacks) 1  a dramatic device in which an earlier event is inserted into the normal chronological flow of a narrative. ( 2 psychology) a vivid mental image of a past trauma, especially one that recurs. 3  a similar recurrence of the effects of a hallucinogenic drug.