(military) A state in which person in the military performs military duties on a full-time basis, as opposed to reserve, where one only occasionally performs military duties.

The process of attending carefully to what a speaker is saying, involving such techniques as accurately paraphrasing the speaker's remarks.

A geologic fault which has exhibited seismic activity within a geologically recent time period.

plural of active matrix

A form of liquid crystal display with a grid of transistors and capacitors that can hold a charge for a limited period of time, contrasted with passive matrix.

plural of active front

The collection of words and phrases that someone commonly uses in speech and writing.

A form of euthanasia wherein death is intentionally brought about, usually by medical intervention to end the euthanasee's suffering.

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

plural of active power