English · Word Candidate

iso

/ˈaɪsəʊ/

Proposed by a contributor, not yet supported by evidence.

Also seen as: isos

Sense 1

Meaning · English

Clipping of isolation. — Quarantine measures in order to mitigate the spread of communicable diseases, such as Covid-19.

NounRegister: colloquial

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Meaning · English

Clipping of isolation. — An isolation play in basketball or American football.

NounRegister: colloquial

“I can remember lining up against them and saying, ‘This is the 15th iso that you’re going to get.’ ”

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Meaning · English

A disk image of an ISO 9660 file system (such as a CD or DVD).

Noun

I downloaded the ISO but got an error when trying to burn it to disc.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Meaning · English

A measure of film sensitivity or brightness, derived from the ISO standard.

Noun

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

What does “iso” mean?

Clipping of isolation. — Quarantine measures in order to mitigate the spread of communicable diseases, such as Covid-19.

Is “iso” formal or informal?

iso is generally colloquial.