Void vs Undefined - What's the difference?

As adjectives the difference between void and undefined

is that void is containing nothing; empty; vacant; not occupied; not filled while undefined is lacking a definition or value.

As a noun void

is an empty space; a vacuum or void can be .

As a verb void

is (label) to make invalid or worthless.

void

English

(wikipedia void)

Etymology 1

From (etyl) vuit'', ''voide (modern vide).

Adjective

(-)

Containing nothing; empty; vacant; not occupied; not filled.

* Bible, Genesis i. 2

The earth was without form, and void .

* Shakespeare

I'll get me to a place more void .

* Massinger

I'll chain him in my study, that, at void hours, / I may run over the story of his country.

Having no incumbent; unoccupied; said of offices etc.

* Camden

divers great offices that had been long void

Being without; destitute; devoid.

* Bible, Proverbs xi. 12

He that is void of wisdom despiseth his neighbor.

Not producing any effect; ineffectual; vain.

* Bible, Isa. lv. 11

[My word] shall not return to me void , but it shall accomplish that which I please.

* Bible, Jer. xix. 7

I will make void the counsel of Judah.

Of no legal force or effect, incapable of confirmation or ratification.

null and void

Containing no immaterial quality; destitute of mind or soul.

* Alexander Pope

idol, void and vain

(computing, programming, of a function or method) That does not return a value.

* 2005 , Craig Larman, Applying UML and patterns

In particular, the roll method is void — it has no return value.

* 2007 , Andrew Krause, Foundations of GTK+ Development

The return value can safely be ignored if it is a void function.

Noun

(en noun)

An empty space; a vacuum.

Nobody has crossed the void since one man died trying three hundred years ago; it's high time we had another go.

* Alexander Pope

Pride, where wit fails, steps in to our defence, / And fills up all the mighty void of sense.

(astronomy) An extended region of space containing no galaxies

(materials science) A collection of adjacent vacancies inside a crystal lattice.

(fluid mechanics) A pocket of vapour inside a fluid flow, created by cavitation.

Synonyms

* pore * bubble

Verb

(en verb)

(label) To make invalid or worthless.

* (1609-1674)

*:It was become a practiceto void the security that was at any time given for money so borrowed.

*(w) (1643-1715)

*:after they had voided the obligation of the oath he had taken

To empty.

To throw or send out; to evacuate; to emit; to discharge.

*:You, that did void your rheum upon my beard, And foot me as you spurn a stranger cur

*(John Webster) (c.1580-c.1634)

*:With shovel, like a fury, voided out / The earth and scattered bones.

*(Isaac Barrow) (1630-1677)

*:a watchful application of mind in voiding prejudices

To withdraw, depart.

*:BY than come in to the feld kynge Ban as fyers as a lyon/ Ha a said kyng Lot we must be discomfyte / for yonder I see the moste valyaunt knyght of the world / and the man of the most renoume / for suche ij bretheren as is kyng Ban & kyng bors ar not lyuynge / wherfore we must nedes voyde or deye

To remove the contents of; to make or leave vacant or empty; to quit; to leave.

* '>citation

*:If they will fight with us, bid them come down, / Or void the field.

Synonyms

* (make invalid or worthless) annul, cancel * evacuate

Etymology 2

Alteration of (voidee).

Noun

(en noun)

* 2011 , Thomas Penn, Winter King , Penguin 2012, p. 68:

Late on the final evening, as the customary ‘void ’ – spiced wine and sweetmeats – was served, more elaborate disguisings in the great hall culminated in the release of a flock of white doves.

Anagrams

* ----

undefined

English

Adjective

(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 .

Antonyms

* defined