(organisation) The International Organization for Standardization.

(computing) A disk image of an ISO 9660 file system (such as a CD or DVD); also used as the file extension for such a file.

Initialism of Imperial Service Order. / (finance) Initialism of incentive stock option.

(in personal ads) Initialism of in search of.

Quarantine measures in order to mitigate the spread of communicable diseases, such as Covid-19. / (American football, basketball) An isolation play in basketball or American football.

Same, identical. / Equal; equivalent. / (chemistry) Isomer. / (organic chemistry) (of an aliphatic compound, especially a fatty acid) Having a branch on the penultimate carbon atom of a chain.

plural of ISO

plural of iso

(chemistry) Any isomer of octane except the normal, straight-chain one; especially 2,2,4-trimethylpentane.

Having the same solute concentration, and therefore the same water potential; frequently construed with with.