plural of second impact syndrome

A measure of kinematic viscosity used in classical mechanics: the time taken by 60 cm³ of oil to flow through a calibrated tube at a controlled temperature of 38°C.

(idiomatic) A time that will never come.

escape velocity of Earth (interplanetary speed)

by extension, escape velocity of the home body

(law) an appellate court.

(science fiction, robotics) One of the Three Laws of Robotics, requiring a robot to obey humans, unless it would conflict with the First Law of Robotics (which forbids a robot to harm a human).

plural of court of second instance

plural of five-second rule

plural of second new ball