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risk · Various · Modern

micromort

µmortinformal
Record
M366
Definition quality
Informal
Conversion mode
contextual
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Definition

One micromort represents a one-in-a-million probability of death.

Approximate reference value

One micromort is understood to be about 1 × 10⁻⁶ probabilitys.

History & use

A risk-communication unit used to compare small acute mortality risks.

Modern use

Used in risk communication and decision analysis; it is a probability/risk unit, not a physical dimension.

Did you know?

Micromorts make very different hazards comparable on the same one-in-a-million risk scale.

Sources & evidence