litmus

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Litmus \Lit"mus\, noun [D. lakmoes; lak lacker + moes a thick preparation of fruit, pap, prob. akin to E. meat: cf. G. lackmus. See {Lac} a resinous substance.] (Chem.) A dyestuff extracted from certain lichens ({Roccella tinctoria}, {Lecanora tartarea}, etc.), as a blue amorphous mass which consists of a compound of the alkaline carbonates with certain coloring matters related to orcin and orcein.

Note: Litmus is used as a dye, and being turned red by acids and restored to its blue color by alkalies, is a common indicator or test for acidity and alkalinity.

{Litmus paper} (Chem.), unsized paper saturated with blue or red litmus, -- used in testing for acids or alkalies.

From WordNet (r) 3.0 (2006) [wn]:

litmus

noun

1: a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator [syn: {litmus}, {litmus test}]


The dictionary definitions are retrieved from a local copy of two of the open source DICT dictionaries. Click here for the database copyright information. DEFINE.COM is registered as an educational NONPROFIT corporation. We aim to please around here. We believe in using positive reinforcement to get things done. We make suggestions that are intended to make life more enjoyable. We think about efficiency, automation, security, PRIVACY, social and ecological responsibility and positive HUMANITARIAN ethics and VALUES. We are benevolent. DO NO HARM is our motto.

Say "Hell No!" to the TPP.


Monday, March 30, 2015 5:47:34 AM Coordinated Universal Time (UTC)

DEFINE.COM_litmus_2015-03-30_05-47-34_54-242-253-192