English-Thai Dictionary
pyrrole
N สารประกอบ ที่ เป็น ส่วนประกอบ ของ คลอโรฟิลล์
Webster's 1913 Dictionary
PYRROL
Pyr "rol, n. Etym: [Gr. oleum oil. ] (Chem. )
Defn: A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red.
PYRROLINE
PYRROLINE Pyr "ro *line, n. (Chem. )
Defn: A nitrogenous base, C4H7N, obtained as a colorless liquid by the reduction of pyrrol.
New American Oxford Dictionary
pyrrole
pyr role |ˈpirˌōl ˈpɪroʊl | ▶noun Chemistry a weakly basic sweet-smelling liquid compound present in bone oil and coal tar. [A heteroaromatic compound; chem. formula: C 4 H 4 NH. ] ORIGIN mid 19th cent.: from Greek purrhos ‘reddish ’ + Latin oleum ‘oil. ’
pyrrolidine
pyr rol i dine |pəˈrōləˌdēn pəˈroʊlədin | ▶noun Chemistry a pungent liquid made by reduction of pyrrole. [Chem. formula: C 4 H 8 NH. ]
pyrrolidone
pyr rol i done |pəˈrōləˌdōn pəˈroʊlədoʊn | ▶noun Chemistry a colorless weakly basic solid that is derived from pyrrolidine. [Chem. formula: C 4 H 7 NO. ]
Oxford Dictionary
pyrrole
pyrrole |ˈpɪrəʊl | ▶noun [ mass noun ] Chemistry a weakly basic sweet-smelling liquid compound present in coal tar. ●A heteroaromatic compound; chem. formula: C 4 H 4 NH. ORIGIN mid 19th cent.: from Greek purrhos ‘reddish ’ + Latin oleum ‘oil ’.
pyrrolidine
pyrrolidine |pɪˈrɒlɪdiːn | ▶noun [ mass noun ] Chemistry a pungent liquid made by the reduction of pyrrole. ●Chem. formula: C 4 H 8 NH.
pyrrolidone
pyrrolidone |pɪˈrɒlɪdəʊn | ▶noun [ mass noun ] Chemistry a colourless weakly basic solid which is a keto derivative of pyrrolidine. ●Chem. formula: C 4 H 7 NO.
Duden Dictionary
Pyrrol
Pyr rol Substantiv, Neutrum , das |Pyrr o l |griechisch-neulateinisch stickstoffhaltige organische Verbindung mit vielen Abkömmlingen von biochemischer Bedeutung z. B. Blutfarbstoff
The Wordsmith Dictionary