plural of absolute superlative

An instrument whose calibration can be determined by means of physical measurements on the instrument.

plural of absolute instrument

plural of absolute monarchy

plural of absolute altimeter

plural of absolute drought

(UK, climatology) A period of drought where there has been no precipitation for at least 15 days.

(physics) The Newtonian concept of an unchanging and unchangeable reference system of time (and spatial) coordinates that is the same for all observers

(physics) The Newtonian concept of an unchanging and unchangeable reference system of spatial (and temporal) coordinates that is the same for all observers

plural of absolute address