Cooler vs Undefined - What's the difference?

As adjectives the difference between cooler and undefined

is that cooler is (cool) while undefined is lacking a definition or value.

is (countable) anything which cools.

(countable) anything which cools

If acid things were used only as coolers , they would not be so proper in this case. — Arbuthnot.

(countable) an insulated bin or box used with ice or freezer packs to keep food or beverages cold while picnicking or camping

(US, countable, or, uncountable) a mixed drink, especially one served chilled

They served wine coolers in the afternoon.

(US, slang) a prison

"About a year or so back we had him in the cooler on a Mann Act rap." - "The Big Sleep", by Raymond Chandler

(poker, colloquial) A cold deck.

(countable) a bouncer or door man

* car fridge * cool bag, cool box (UK) * chilly bin (New Zealand) * esky (Australia) * ice chest * bouncer

(head)

(cool)

He looks cooler when he's dressed in shorts.

* cooler heads will prevail

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(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