Essential components of a device, reaction, etc. / A radioactive material

cyberactivism

(UK, military) Full-time occupation in the military.

plural of active material

plural of active matrix

(computer science) A function that defines the output of a particular node in an artificial neural network on the basis of its inputs.

(ichthyology) The use of light originating from the organism to illuminate the visual field to see into the field of vision.

Dated spelling of radioactive.

(obsolete, gay slang) Taking or preferring to take the insertive role in anal sex.

(obsolete, gay slang) Preferring to give rather than receive fellatio.