What's the difference between sandarac and sandarach?
Sandarac
Definition:
(n.) Realgar; red sulphide of arsenic.
(n.) A white or yellow resin obtained from a Barbary tree (Callitris quadrivalvis or Thuya articulata), and pulverized for pounce; -- probably so called from a resemblance to the mineral.
Example Sentences:
(1) According to standard procedures, after pulp extirpation, canals were temporarily filled with sandarac cotton pellets and left otherwise untreated for 4 weeks.
(2) The results suggested that sandarac varnishes containing high concentrations of chlorhexidine can be used successfully for long-term suppression of S. mutans in dental fissures.
(3) Sandarac, a natural resin, was used as the varnish base.