Glossary

A layer of wood produced during one year of a trees growth.

Said of a ring-shaped structure or object.

A nail with circular ridges around its shaft; provides greater holding power than a nail without such ridges.

A process of holding a material at an elevated temperature, but below its melting point, to permit the relieving of

A subsidiary structure near or adjoining a larger principal building.

The acquisition of new territory by a governmental authority, such as a city or state.