biosignature

noun

Etymology: Etymology tree Proto-Indo-European *gʷeyh₃-der. Ancient Greek βῐ́ος (bĭ́os) Ancient Greek βῐο- (bĭo-)der. English bio- English signature English biosignature From bio- + signature.

1. Any measurable phenomenon that indicates the presence or probable presence of life.

   “The team say dimethyl sulfide and dimethyl disulfide are molecules from the same chemical family, and could be ‘biosignatures’.”