Wilkipedia's definition of a beaker used in a laboratory can be found at the following link: http://en.wikipedia.org/wiki/Beaker
-and is described in the following paragraphs:
is a simple container for stirring, mixing and heating liquids commonly used in many laboratories. Beakers are generally cylindrical in shape, with a flat bottom so that that they can be set onto many different types of surfaces, and they usually have a thick top (lip) with a spout to make it easier to pour liquids.
They may be made of glass (very often borosilicate glass) or of various plastics. Beakers used for holding solutions of corrosive chemicals such as acids or other highly reactive chemicals, are often made of PTFE or other low reactivity materials. The American Heritage Dictionary
defines a beaker as wide cylindrical glass vessel with a pouring lip, used as a laboratory container and mixing jar. Additionally, it provides the basic etymology of the noun beaker: Middle English biker
and Middle Dutch bker
, drinking vessel
, both from Medieval Latin bicrius
In concurrence, specific science-centric and chemistry-centric dictionaries provide identical definitions, as well.
beaker. (n.d.) .” The American Heritage® Dictionary of the English Language,www.bartleby.com/61/
. 4th ed. Boston: Houghton Mifflin, 2000. Retrieved January 19, 2009.