Here are some possible interpretations based on similar-sounding words:
* Biosteric: This is a term used in chemistry, specifically in the context of drug design. It refers to molecules that have a similar shape and size to a known active compound, but with different functional groups. This can lead to altered pharmacological activity.
* Biostatic: This refers to something that inhibits the growth of living organisms, often used in the context of antimicrobial agents.
* Biostress: This refers to the stress experienced by living organisms due to environmental factors.
If you can provide more context about where you encountered the word "biosterous," it might be possible to determine its intended meaning.