(inorganic chemistry) A saturated solution of ammonia in water; ammonium hydroxide 28% (w/w as ammonia).

The decade of the 1980s. / Temperatures from 80 to 89 degrees.

(Canada, US) A toll-free telephone number.

plural of 800 number

Alternative spelling of eighth grade

(idiomatic) An entity that dominates its environment. / (idiomatic) Something dangerous, menacing, or frightening that is obvious but not addressed.

(athletics) A middle-distance running race over 800 metres.

plural of 88

(law) Abbreviation of United States Court of Appeals for the Eighth Circuit.

An IEEE standard, IEEE 802.11e-2005, that adds QoS (Quality of Service) features and multimedia support to the existing 802.11b, 802.11g, and 802.11a wireless networks.