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Definition of vax

vax

/væks/
vax

Plural:vaxes
•
Past Simple:vaxxed
•
Past Participle:vaxxed
•
Present Participle:vaxxing
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vax Lexical Profile

vax Game Scores & Validity

• noun

1

An informal term for a vaccine or vaccination, a biological preparation used to stimulate immunity to a particular infectious disease.

Example

"Many local clinics set up temporary drive-through tents to distribute the flu vax before the winter season began."

Synonyms
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• verb

1

To administer a vaccine to a person or animal in order to produce immunity against a disease.

Example

"The government launched a widespread public health campaign to vax the entire adult population by the end of the year."

Synonyms
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Word Nuance & Usage

The term is a highly informal clipping of 'vaccine' or 'vaccinate' and frequently takes a double 'x' in its inflected verbal forms (e.g., vaxxed, vaxxing) to preserve the short vowel pronunciation.

• Rhymes for vax

Word Origin & Etymology

A colloquial clipping of 'vaccine' or 'vaccinate' (ultimately from Latin 'vacca' meaning cow), originating in the late 20th century but achieving global ubiquity during the COVID-19 pandemic.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Vax. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/vax
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