plural of S level

(UK, historical, education) A public examination taken by the most able A-level students and typically used to support university applications, particularly to Oxbridge.

Ground level.

plural of T level

(aviation) The lowest flight level above the transition altitude; depends on the transition altitude and the measured or calculated sea-level atmospheric pressure. The flight level at which a descending aircraft's barometric altimeters are reset from a constant setting of 1013.25 hectopascals to the setting corresponding to the actual measured or calculated atmospheric pressure at mean sea level.

Alternative form of bilevel

Alternative form of bilevel

Alternative form of wear leveling

Synonym of superficial.

plural of power level