Simply put, worthy of bending over the arm of a couch. This term is used to define a young lady that is worthy of such an act.

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

A word used to describe a female of a certain degree of attractivity. A female described as "couchworthy" has generally sizeable breasts and an appealing posterior. The term itself literally means that the female is attractive enough that the speak considers her worthy of being bent over against a couch for sexual activity.