Defn: An alkaloid found with hyoscyamine (with which it is also isomeric) in henbane, and extracted as a white, amorphous, semisolid substance.
HYOSCYAMINE
Hy`os*cy"a*mine, n. Etym: [See Hyoscyamus.] (Chem.)
Defn: An alkaloid found in henbane (Hyoscyamus niger), and regarded as its active principle. It is also found with other alkaloids in the thorn apple and deadly nightshade. It is extracted as a white crystalline substance, with a sharp, offensive taste. Hyoscyamine is isomeric with atropine, is very poisonous, and is used as a medicine for neuralgia, like belladonna. Called also hyoscyamia, duboisine, etc.
HYOSCYAMUS
Hy`os*cy"a*mus, n. Etym: [L., fr. Gr.
1. (Bot.)
Defn: A genus of poisonous plants of the Nightshade family; henbane.
2. (Med.)
Defn: The leaves of the black henbane (Hyoscyamus niger), used in neuralgic and pectorial troubles.
HYOSTERNAL Hy`o*ster"nal, a. Etym: [Hyo- + ternal.] (Anat.) (a) Between the hyoid bone and the sternum, or pertaining to them; infrahyoid; as, the hyosternal region of the neck. (b) Pertaining to the hyosternum of turtles.
HYOSTERNUM
Hy`o*ster"num, n. Etym: [Hyo- + sternum.] (Anat.)