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alternate between (people or things)

To switch between two or more different people or things. We are going to alternate between the lead and the understudy at today's rehearsal. The air conditioner alternates between settings depending on the temperature, so I don't think it will get too cold in here.
See also: alternate, between

alternate with

1. To share a role or task with another person. Because we're co-hosting the talent show together, we're planning to alternate with jokes and introductions.
2. To appear repetitively with something else. That pattern is visually overwhelming; it's just a constant line of circles alternating with squares.
See also: alternate
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

alternate between (someone and someone else)

 and alternate between something and something else
to choose or change between two persons or things alternately. The job will alternate between Gil and Ed. The maid will alternate between the first floor and the second floor.
See also: alternate, between

alternate with something

1. [for someone] to serve as a substitute for someone. I alternated with Fred as the lead in the school play. They asked Harry to alternate with Ron on the team.
2. [for something] to appear repetitively and regularly in a sequence with something else. (For instance, A alternates with B in the sequence ABABAB.) In this design the straight lines alternate with the circles. The red dots alternate with the blue ones.
See also: alternate
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
Credentialed alternates may take the place of credentialed delegates during any business meetings, provided such changes are recorded by the Chairman of the Credentials SubCommittee.
According to the IPH, airports with only a GPS approach procedure cannot be used as an alternate by users lacking WAAS-equipped aircraft.
Some, however, go literally a step beyond, such as the requirement for specifying an alternate destination (as well as hopefully having some rough plan for getting there).
Another misrepresented reg is 91.169, which says that, by default, all IFR flight plans include a filed alternate. All of 'em, even on a clear-and-a-million day.
For regular states reporting on alternate assessments based on alternate achievement standards (AA-AAS), 45 states had at least some data reported, up from 36 the previous year.
That, combined with what can become a rote fixation on selecting an IFR alternate based only on the regs regarding weather at the destination, is an invitation to poor decision-making when a little smoke in the cockpit means shutting off the electrical system a third of the way into the flight, or the engine starts running rough on initial climb from an airport that's below approach minimums.
Everyone who has received instrument training has gone through alternate planning exercises, which are usually distilled down to the 1-2-3 rule and memorizing the 600-2 and 800-2 weather requirements for precision and non precision approaches.