(linguistics, linguistic morphology) Regularisation of a paradigm, alignment of irregular forms on regular forms; replacement of irregular forms by regular forms in an inflection.

(construction) The level, at a particular site, below which the subsoil and rock masses of the earth are fully saturated with water.

(tool) A tool for measuring levels and angles; combining a spirit level and an angle finder.

Seats of additional members elected to supplement the members directly elected by each constituency, for ensuring that each party's share of the total seats is roughly proportional to the parties' overall shares of votes at the national level.

(business) Involving direct communication between higher- and lower-ranking employees who would usually only communicate through a person of intermediate rank.

(mining) A level or drainage gallery which has a vertical shaft at each end, and acts as an inverted siphon.

A spirit level in which a glass-covered box is used instead of a tube.

present participle of level set

Built or occurring underground at a relatively deep level.

(computing) A technique for extending the service life of some kinds of erasable storage media, such as flash memory, by arranging data so that erasures and rewrites are distributed evenly across the medium.