Cycler vs Undefined - What's the difference?

As a noun cycler

is anything with a cyclic (repetitious) behaviour something that s between different states or cycler can be (dated) cyclist.

lacking a definition or value.

From ;

(en noun)

Anything with a cyclic (repetitious) behaviour. Something that s between different states.

The battery cycler allows us to switch between batteries as each one runs out.

(astronomy) An orbit that approaches two astronomical bodies on a regular basis.

The Earth-Mars cycler s could potentially be used for transporting people between the two planets.

(by extension) A, usually man-made, object that follows such an orbit.

If we had more than one cycler then the length of time between the outbound and inbound journeys could be reduced to a few months.

(psychology, euphemistic) a person with bipolar disorder, often used when comparing the speed of mood swings.

My son's a fast cycler which is much harder for people to understand.

(medicine) A device for performing dialysis; for mechanically purifying blood

The only issue I have had with my cycler was when the cat started chewing on the connecting line.

(biochemistry) a thermal cycler; a machine for creating multiple copies of DNA sequences.

We took samples from the tubes in the cycler at regular intervals

(computing) a task in a cycle of tasks where the status of being active task is passed around the loop.

When the last cycler has run for 200ms we pass control back to the first one and begin again.

From ; someone that uses a cycle (or bicycle)

(en noun)

(dated) cyclist

There is nothing more annoying than a rogue cycler ignoring the other road users.

* ("cycler" on Wikipedia)

(wikipedia undefined) (-)

Lacking a definition or value.

(mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

The result of division by zero is undefined .

* defined