trueness

https://doi.org/10.1351/goldbook.16170
Closeness of agreement between the average of a theoretically infinite number of replicate measured quantity values and a reference quantity value.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1329 [Terms] [Paper]