Legg-Calvé-Perthes disease

A childhood hip disorder initiated by a disruption of blood flow to the ball of the femur, which subsequently stops growing.

(archaic) second-person singular simple present form of pertain

(inorganic chemistry) A strong oxoacid of technetium with chemical formula HTcO₄.

Legg-Calvé-Perthes disease

plural of pertechnate

A salt or ester of pertechnic acid.

(biochemistry) A highly immunogenic virulence factor of Bordetella pertussis, a bacterium that causes pertussis.

A compound with the chemical formula HTcO₄.

(from 1929) A council area of Scotland, and a former administrative county of Scotland created from the administrative counties of Perthshire and Kinross-shire in 1929. Between 1974 and 1996, it was a local government district of the Tayside Region.