covering
/ˈkʌvəɹɪŋ/ noun
Also a form of cover
Forms coverings
- noun (countable) That which covers or conceals; a cover; something spread or laid over or wrapped about another.
- noun (uncountable) Action of the verb to cover.
- noun (topology, of a given open set U) A collection of sets U_i such that their union contains U; such a collection with the additional property that every U_i is open; such a collection with the additional property that every U_i is contained in U.
- noun (topology) A special kind of map that establishes a relationship between two topological spaces in the sense that, under the action of the map, the one looks locally like several copies of the second: Formally, a continuous map π:E→X between topological spaces such that there exists, for every point x in X, a discrete space D_x and an open neighborhood U of x such that π⁻¹(U)= displaystyle ⨆_(d∈D_x)V_d and π|_(V_d):V_d→U is a homeomorphism for every d∈D_x. See Covering space on Wikipedia.Wikipedia
Synonyms
natural covering cover screening masking application coating
Etymology
From Middle English coverynge, -inge, keverynge, -inge [verbal noun of coveren, keveren (“to cover”)]; or, verbal noun from cover (verb) + -ing.
Present participle or participial adjective from cover (verb) + -ing; or, from Middle English coverynge, participle form of coveren, keveren (“to cover”).
Webster’s 1913
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “covering”, CC BY-SA 4.0. Details