| slovo | definícia |
lecanora
(encz) | lecanora, n: |
Lecanora
(gcide) | Orcin \Or"cin\, n. [Etymology uncertain: cf. F. orcine.] (Chem.)
A colorless crystalline substance, C6H3.CH3.(OH)2, which is
obtained from certain lichens (Roccella, Lecanora, etc.),
also from extract of aloes, and artificially from certain
derivatives of toluene. It changes readily into orcein.
[1913 Webster] |
lecanora
(wn) | lecanora
n 1: any lichen of the genus Lecanora; some used in dyeing; some
used for food |
| | podobné slovo | definícia |
lecanora
(encz) | lecanora, n: |
Lecanora parella
(gcide) | Parella \Pa*rel"la\, Parelle \Pa`relle\, n. [Cf. F. parelle.]
(Bot.)
(a) A name for two kinds of dock (Rumex Patientia and
Rumex Hydrolapathum).
(b) A kind of lichen (Lecanora parella) once used in dyeing
and in the preparation of litmus.
[1913 Webster] |
Lecanora tartarea
(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]Cudbear \Cud"bear`\ (k?d"b?r`), n. [Also cudbeard, corrupted
fr. the name of Dr. Cuthbert Gordon, a Scotchman, who first
brought it into notice.]
1. A powder of a violet red color, difficult to moisten with
water, used for making violet or purple dye. It is
prepared from certain species of lichen, especially
Lecanora tartarea. --Ure.
[1913 Webster]
2. (Bot.) A lichen (Lecanora tartarea), from which the
powder is obtained.
[1913 Webster] |
family lecanoraceae
(wn) | family Lecanoraceae
n 1: a fungus family of the division Lichenes [syn:
Lecanoraceae, family Lecanoraceae] |
genus lecanora
(wn) | genus Lecanora
n 1: type genus of Lecanoraceae; crustaceous lichens |
lecanora
(wn) | lecanora
n 1: any lichen of the genus Lecanora; some used in dyeing; some
used for food |
lecanoraceae
(wn) | Lecanoraceae
n 1: a fungus family of the division Lichenes [syn:
Lecanoraceae, family Lecanoraceae] |
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