| slovo | definícia |
C4H4
(gcide) | Tetrol \Tet"rol\, n. [Tetra- + benzol.] (Chem.)
A hypothetical hydrocarbon, C4H4, analogous to benzene; --
so called from the four carbon atoms in the molecule.
[1913 Webster]
Tetrol phenol, furfuran. [Obs.]
[1913 Webster] |
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C4H4N2
(gcide) | Pyrazine \Pyr"a*zine\, n. Also -zin \-zin\ . [Pyridine + Gr. ?
not + ? life.] (Org. Chem.)
A feebly basic solid, C4H4N2, obtained by distilling
piperazine with zinc dust, and in other ways. Also, by
extension, any of various derivatives of the same.
[Webster 1913 Suppl.] |
C4H4O
(gcide) | Furfuran \Fur"fu*ran\, n. [L. furfur bran.] (Chem.)
A colorless, oily substance, C4H4O, obtained by distilling
certain organic substances, as pine wood, salts of pyromucic
acid, etc.; -- called also tetraphenol.
[1913 Webster]Glycolide \Gly"co*lide\, n. [Glycol + anhydride.] (Chem.)
A white amorphous powder, C4H4O, obtained by heating and
dehydrating glycolic acid. [Written also glycollide.]
[1913 Webster] |
C4H4O5
(gcide) | Tartrelic \Tar*trel"ic\, a. [From Tartar the chemical
compound.] (Chem.)
Of, pertaining to, or designating, an anhydride, C4H4O5, of
tartaric acid, obtained as a white crystalline deliquescent
substance.
[1913 Webster] |
C4H4S
(gcide) | Thiophene \Thi"o*phene\, n. [Thio- + phenyl + -ene.] (Chem.)
A sulphur hydrocarbon, C4H4S, analogous to furfuran and
benzene, and acting as the base of a large number of
substances which closely resemble the corresponding aromatic
derivatives.
[1913 Webster] |
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