Causing decay by chemical reaction. corrosive substance.

Being the inside part of a building, car etc.. Remote central area of a continent.

physical or real. Hard building material made of cement, sand, water. cover with concrete.

formal request. Software programs, e.g. for smart phone.

heavy object for mooring ship. Metal hook on a rope used to stop boats moving. To lower an anchor to hold a boat or ship in place.

relating to or found on surface of something. Nature or emotions that show, but may not be true. To come to the top level of water, mud, etc..

enclosing boundary of curved geometric figure.

forming or relating to outside. Outside layer or surface.

To turn lid, bolt etc., until it is firmly in place.

Being the most powerful.

To any extent or degree (often used with not). Use to indicate limits or variation. any place.

in most essential respects.

designed to be pulled out of usual position. .

of or found in salt water. Water containing salts such as the ocean.

Being perfect and without damage or soil.