| slovo | definícia |
litmus paper
(encz) | litmus paper,lakmusový papír Zdeněk Brož |
Litmus paper
(gcide) | Litmus \Lit"mus\, n. [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.
[1913 Webster]
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.
[1913 Webster]
Litmus paper (Chem.), unsized paper saturated with blue or
red litmus, -- used in testing for acids or alkalies.
[1913 Webster] |
litmus paper
(wn) | litmus paper
n 1: unsized paper treated with litmus for use as an acid-base
indicator |
| | podobné slovo | definícia |
Litmus paper
(gcide) | Litmus \Lit"mus\, n. [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.
[1913 Webster]
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.
[1913 Webster]
Litmus paper (Chem.), unsized paper saturated with blue or
red litmus, -- used in testing for acids or alkalies.
[1913 Webster] |
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