loss on ignition; ignition loss; LOI
Technical term in chemistry and materials science for the mass lost when a sample is heated to a high temperature, often used in analytical chemistry and geochemistry.
We measured the loss on ignition to estimate the organic content of the sample.
The ignition loss of this cement is below the standard value.
Compound of 強熱 (kyōnetsu, 'strong heating') and 減量 (genryō, 'loss in weight'), directly describing the measurement principle.