A surname from German.

A language of Meghalaya (India), Assam, Tripura, Manipur, West Bengal, Bihar, and Bangladesh.

plural of Koch snowflake

A fractal curve based on the Koch curve.

plural of Koch's postulate

Any of four criteria designed to establish a causative relationship between a microbe and a disease: (i) the microorganism must be found in abundance in all organisms suffering from the disease, but should not be found in healthy organisms; (ii) it must be isolated from a diseased organism and grown in pure culture; (iii) the cultured microorganism should cause disease when introduced into a healthy organism; (iv) the microorganism must be reisolated from the inoculated, diseased experimental host and identified as being identical to the original specific causative agent.

(now chiefly historical) The bacterium Mycobacterium tuberculosis, which causes tuberculosis.

plural of Koch's bacillus

(anatomy) An area located in the superficial paraseptal endocardium of the right atrium.

Beta Ursae Minoris, the second-brightest star in the constellation Ursa Minor.