What does heterospecific mean?
Heterospecific describes a relationship, interaction, or other connection between organisms or entities from different species. In ecology, the word can characterize associations between species, such as interactions involving a predator and prey or a parasite and host. In immunology, it may describe activity or responses involving material from another species, such as antibodies that react with antigens from more than one species. The term is precise where general language might simply say “cross-species” or “between species.” It should not be confused with “heterogeneous,” which means made up of unlike elements but does not necessarily refer to differences between species. Heterospecific is most common in technical scientific writing, especially research literature. Its antonym, “intraspecific,” concerns members of the same species.
adjectiveOf or relating to two or more organisms or entities belonging to different species. The term is especially used in biology, ecology, and immunology for relationships or interactions across species.
- Relating to or involving organisms or entities belonging to different species.
"The newly described parasite forms heterospecific associations with several unrelated host species."
"Heterospecific interactions can have important consequences for the structure of an ecosystem."
"The laboratory tested the antiserum for heterospecific activity against antigens from several other species."
Heterospecific is taxonomy’s precise way of saying “different species”—the “other” in its name comes from the Greek word for other.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does heterospecific come from?
Heterospecific was formed in scientific English by combining the Greek heteros, meaning “other” or “different,” with specific, a term based on the Latin species and used for something belonging to a particular species. The combination developed within modern scientific usage to describe interactions or relationships involving different species. Its components also appear in words such as heterogeneous and heterogeneity, which likewise derive from the Greek root meaning “other” or “different.”
Related word forms
How heterospecific is actually used
This is a formal scientific term used chiefly in biology, ecology, and immunology. It is related to “interspecific” but tends to emphasize the different taxonomic identities of the organisms or entities involved.
Easily confused with heterospecific
Heterogeneous means composed of unlike parts, whereas heterospecific specifically involves organisms or entities from different species.