(uncountable) Biotechnology. / (countable) A company specializing in biotechnology, or stock in such a company.

(ecology) The living organisms of a region. / The coniferous tree Platycladus orientalis (syn. Biota orientalis, Oriental arborvitae).

(biology) Of, pertaining to, or produced by life or living organisms / Misspelling of biontic.

A nutritional substance that improves the health of gastrointestinal microorganisms, especially one that occurs naturally.

The use of living organisms (especially microorganisms) in industrial, agricultural, medical and other technological applications.

Terrorism that involves biological weapons or agents.

(oncology) The vitamin biotin labelled with radioactive (yttrium-90), used in the treatment of cancer, where it seeks out tumor cells that have been targeted by an antibody linked to streptavidin and kills them.

a terrorist employing biological weapons

of or relating to a bioterrorist or bioterrorism

(biochemistry) A sulfur-containing member of the vitamin B complex, 5-[(3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl]pentanoic acid, found in liver, egg yolk, milk, and yeast, essential to the activity of multiple enzyme systems.