astromolecule means any molecule that has been detected in interstellar or circumstellar space. Lexicurio rates it Sui generis — a strength score of 85 out of 100.
Etymology
From astro- + molecule.
noun
- Any molecule that has been detected in interstellar or circumstellar space“As such, C#95;3P⁻ is probably a more detectable astromolecule than even its corresponding neutral radical.”