(zoology) The second word in the scientific name of a species, following the name of the genus.

(physics) The ratio of the electric charge to the mass of a particle

The ratio of the thrust produced by a rocket or other jet engine to the rate of use of propellant.

(physics) The energy of a substance measured per unit mass

Any morbid fear of specific objects or situations, such as fingers, injections, or darkness.

plural of specific phobia

(physics) The volume of unit mass of a substance; the reciprocal of its density

plural of specific gravity

Alternative spelling of nonspecific

(engineering) The thrust per unit weight of a vehicle or engine.