plural of register grate

A grate with a shutter behind it.

(Commonwealth of Nations) The director of the General Register Office.

The activity of restoring bushland to its original condition free of introduced species.

(graph theory) A graph whose vertices all have the same degree.

The highest register of the human voice, lying above the modal register and falsetto.

(computer science) A formal language that can be expressed using a regular expression or finite-state machine.

Concerning; about.

plural of region rat

A device (originally fitted with a pen, but now purely electronic) that records all numbers called from a particular telephone line.