plural of Perthian

(chemistry) persulphocyanogen

(chemistry) persulphocyanic acid

(organic chemistry) An insecticide, 1,1-dichloro-2,2-bis(4-ethylphenyl)ethane

A mathematical technique for finding an approximate solution to a problem that cannot be solved exactly, by starting from the exact solution of a related problem; used in modelling physical interactions between particles, etc.

The relationship between terms that are pertainyms.

plural of pertaining

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