2. Capable of being extended. [Obs.] Silver beaters choose the finest coin, as that which is most extensive under the hammer. Boyle.

EXTENSIVELY
Ex*ten"sive*ly, adv.

Defn: To a great extent; widely; largely; as, a story is extensively circulated.

EXTENSIVENESS
Ex*ten"sive*ness, n.

Defn: The state of being extensive; wideness; largeness; extent; diffusiveness.

EXTENSOMETER
Ex`ten*som"e*ter, n. Etym: [Extension + -meter.]

Defn: An instrument for measuring the extension of a body, especially for measuring the elongation of bars of iron, steel, or other material, when subjected to a tensile force.

EXTENSOR
Ex*ten"sor, n. Etym: [L., one who stretches. See Extend.] (Anat.)

Defn: A muscle which serves to extend or straighten any part of the body, as an arm or a finger; — opposed to flexor.

EXTENSURE
Ex*ten"sure, n.