(derogatory) One who angers easily or goes in search of arguments or fights. / One who reacts quickly and without thinking carefully first

plural of Wangler

(inorganic chemistry) The anion BiO₃⁻ of pentavalent bismuth; any salt containing this anion

(mathematics, logic) An extension of a logical theory such that every theorem expressible in the original theory is also derivable within the original theory.