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gingivitis

(Encyclopedia) gingivitisgingivitisjĭnˌjəvīˈtĭs [key], inflammation of the gums. It may be acute, subacute, chronic, or recurrent. The gums usually become red, swollen, and spongy, and bleed easily.…

turquoise

(Encyclopedia) turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has…

Alleluia

(Encyclopedia) Alleluia, Latin form of the expression Hallelujah.

sudoku

(Encyclopedia) sudoku or su dokusudokus&oomacr;dōˈk&oomacr; [key] [Jap.,=single number], a number puzzle consisting, in its classic form, of a square divided into nine squares, with each…

hail, in meteorology

(Encyclopedia) hail, precipitation in the form of pellets composed of ice or of ice and snow, occurring at any time of the year, usually during the passage of a cold front or during a thunderstorm.…

Carmichael

(Encyclopedia) Carmichael, uninc. residential city (2020 pop. 64,454), Sacramento co., N central Calif., on the American River. Light manufacturing and…

Abdias

(Encyclopedia) AbdiasAbdiasăbdīˈəs [key], Vulgate form of Obadiah.

tunicate

(Encyclopedia) tunicatetunicatet&oomacr;ˈnəkĭt [key], marine animal of the phylum Chordata, which also includes the vertebrates. The adult form of most tunicates (also called urochordates) shows…

valence, in chemistry

(Encyclopedia) valence, combining capacity of an atom expressed as the number of single bonds the atom can form or the number of electrons an element gives up or accepts when reacting to form a…

Bundaberg

(Encyclopedia) Bundaberg, city and region, Queensland, E Australia, on the Burnett River. The city, a sugar-refining center and a port, was amalgamated…