Dozimetrid

Dozimetrid is a term used in speculative biology and science fiction to describe a class of organisms or biohybrid materials that function as living dosimeters, capable of indicating the cumulative radiation dose in an environment or on a host. The name combines dosimeter with a biological suffix commonly used for taxonomic terms, signaling a functional relationship to sensing radiation rather than a conventional organismal lineage.

In most portrayals, dozimertrids are ultra-small, either single-celled or simple multicellular constructs. They are described as responding to ionizing radiation by changing an observable property—such as a shift in pigment, fluorescence, or luminescence—that correlates with absorbed dose. Some versions imagine them hosting reporter proteins or DNA-scale sensors that encode dose information into measurable signals, enabling rapid readouts without external instrumentation.

Taxonomy and distribution are fictional or speculative; dozimertrids are placed in artificial or hypothetical groups within narratives. They are depicted in diverse habitats, from the interiors of nuclear reactors and spacecraft to extreme terrestrial environments where radiation levels are elevated. The concept often serves as a narrative device to explore biosensor design, ecological interactions, or ethical questions surrounding living sensors.

Real-world context: dozimertrids as a recognized biological taxon do not exist in current scientific consensus. The idea overlaps with real biosensor research and biological dosimetry, where living cells or engineered organisms (for example, luminescent or reporter cell lines) are used to assess radiation exposure. These non-fictional approaches aim to provide quantitative dose information while avoiding the implications of a new, discrete biological group.