English-Thai Dictionary
orpiment
N สาร Arsenic trisulfide ซึ่ง มี สีเหลือง san
Webster's 1828 Dictionary
ORPIMENT
n.[L. auripigmentum; aurum, gold, and pigmentum.] Sulphuret of arsenic, found native and then an ore of arsenic, or artificially composed. The native orpiment appears in yellow, brilliant and seemingly talcky masses of various sizes. The red orpiment is called realgar. It is more or less lively and transparent, and often crystallized in bright needles. In this form it is called ruby of arsenic.
Webster's 1913 Dictionary
ORPIMENT
Or "pi *ment, n. Etym: [F., fr. L. auripigmentum; aurum gold +pigmentum pigment. Cf. Aureate, Pigment, Orpin, Orpine. ] (Chem. )
Defn: Arsenic sesquisulphide, produced artificially as an amorphous lemonyellow powder, and occurring naturally as a yellow crystalline mineral; -- formerly called auripigment. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing. Our orpiment and sublimed mercurie. Chaucer. Red orpiment, realgar; the red sulphide of arsenic. -- Yellow orpiment, king's yellow.
New American Oxford Dictionary
orpiment
or pi ment |ˈôrpəmənt ˈɔrpəmənt | ▶noun a bright yellow mineral consisting of arsenic trisulfide, formerly used as a dye and artist's pigment. ORIGIN late Middle English: via Old French from Latin auripigmentum, from aurum ‘gold ’ + pigmentum ‘pigment. ’
Oxford Dictionary
orpiment
orpiment |ˈɔːpɪm (ə )nt | ▶noun [ mass noun ] a bright yellow mineral consisting of arsenic trisulphide, formerly used as a dye and artist's pigment. ORIGIN late Middle English: via Old French from Latin auripigmentum, from aurum ‘gold ’ + pigmentum ‘pigment ’.
The Wordsmith Dictionary