noun
Meaning 1
Any nucleic acid composed of bases other than adenine, guanine, thymine, uracil and cytosine and/or sugars other than ribose and deoxyribose, that could form the basis of extraterrestrial carbon-based life.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided