The act of preserving, guarding, or protecting; the keeping (of a thing) in a safe or entire state; preservation.
The discipline concerned with protection of biodiversity, the environment, and natural resources
The protection and care of cultural heritage, including artwork and architecture, as well as historical and archaeological artifacts
Wise use of natural resources.
Genes and associated characteristics of biological organisms that are unchanged by evolution, for example similar or identical nucleic acid sequences or proteins in different species descended from a common ancestor
lack of change in a measurable property of an isolated physical system (conservation of energy, mass, momentum, electric charge, subatomic particles, and fundamental symmetries)
The condition or feeling of being safe; security; certainty.
An instance of a player being sacked or tackled in the end zone, or stepping out of the end zone and off the field, resulting in two points to the opposite team.
A mechanism on a weapon or dangerous equipment designed to prevent accidental firing.
Any of the defensive players who are in position furthest from the line of scrimmage and whose responsibility is to defend against passes as well as to be the tacklers of last resort.
A safety squeeze.
Preservation from escape; close custody.
to secure a firing pin, as in guns, to keep the gun from firing
To secure (a mechanical component, as in aviation) to keep it from becoming detached even under vibration.