Conium maculatum
Poison Poi"son, n. [F. poison, in Old French also, a potion, fr. L. potio a drink, draught, potion, a poisonous draught, fr. potare to drink. See {Potable}, and cf. {Potion}.] 1. Any agent which, when introduced into the animal organism, is capable of producing a morbid, noxious, or deadly effect upon it; as, morphine is a deadly poison; the poison of pestilential diseases. [1913 Webster]

2. That which taints or destroys moral purity or health; as, the poison of evil example; the poison of sin. [1913 Webster]

{Poison ash}. (Bot.) (a) A tree of the genus {Amyris} ({Amyris balsamifera}) found in the West Indies, from the trunk of which a black liquor distills, supposed to have poisonous qualities. (b) The poison sumac ({Rhus venenata}). [U. S.]

{Poison dogwood} (Bot.), poison sumac.

{Poison fang} (Zo["o]l.), one of the superior maxillary teeth of some species of serpents, which, besides having the cavity for the pulp, is either perforated or grooved by a longitudinal canal, at the lower end of which the duct of the poison gland terminates. See Illust. under {Fang}.

{Poison gland} (Biol.), a gland, in animals or plants, which secretes an acrid or venomous matter, that is conveyed along an organ capable of inflicting a wound.

{Poison hemlock} (Bot.), a poisonous umbelliferous plant ({Conium maculatum}). See {Hemlock}.

{Poison ivy} (Bot.), a poisonous climbing plant (formerly {Rhus Toxicodendron}, or {Rhus radicans}, now classified as {Toxicodendron radicans}) of North America. It is common as a climbing vine, especially found on tree trunks, or walls, or as a low, spreading vine or as a shrub. As a low vine it grows well in lightly shaded areas, recognizable by growing in clusters of three leaves. Its leaves are trifoliate, rhombic-ovate, and variously notched. Its form varies slightly from location to location, leading to some speculation that it may consist of more than one species. Many people are poisoned by it, though some appear resistant to its effects. Touching the leaves may leave a residue of an oil on the skin, and if not washed off quickly, sensitive areas of skin become reddened and develop multiple small blisters, lasting for several days to several weeks, and causing a persistent itch. The toxic reaction is due to an oil, present in all parts of the plant except the pollen, called {urushiol}, the active component of which is the compound {pentadecylacatechol}. See {Poison sumac}. It is related to {poison oak}, and is also called {mercury}.

{Poison nut}. (Bot.) (a) Nux vomica. (b) The tree which yields this seed ({Strychnos Nuxvomica}). It is found on the Malabar and Coromandel coasts.

{Poison oak} (Bot.), a dermatitis-producing plant often lumped together with the poison ivy ({Toxicodendron radicans}) in common terminology, but more properly distinguished as the more shrubby {Toxicodendron quercifolium} (syn. {Toxicodendron diversilobum}), common in California and Oregon. Opinion varies as to whether the poison oak and poison ivy are only variants of a single species. See {poison ivy}, above.

{Poison sac}. (Zo["o]l.) Same as {Poison gland}, above. See Illust. under {Fang}.

{Poison sumac} (Bot.), a poisonous shrub formerly considered to be of the genus {Rhus} ({Rhus venenata}), but now classified as {Toxicodendron vernix}; -- also called {poison ash}, {poison dogwood}, and {poison elder}. It has pinnate leaves on graceful and slender common petioles, and usually grows in swampy places. Both this plant and the poison ivy ({Toxicodendron radicans}, formerly {Rhus Toxicodendron}) have clusters of smooth greenish white berries, while the red-fruited species of this genus are harmless. The tree ({Rhus vernicifera}) which yields the celebrated Japan lacquer is almost identical with the poison sumac, and is also very poisonous. The juice of the poison sumac also forms a lacquer similar to that of Japan. [1913 Webster +PJC]

Syn: Venom; virus; bane; pest; malignity.

Usage: {Poison}, {Venom}. Poison usually denotes something received into the system by the mouth, breath, etc. Venom is something discharged from animals and received by means of a wound, as by the bite or sting of serpents, scorpions, etc. Hence, venom specifically implies some malignity of nature or purpose. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Conium maculatum — Conium Co*ni um (? or ?), n. [NL., fr. Gr. ? hemlock.] 1. (Bot.) A genus of biennial, poisonous, white flowered, umbelliferous plants, bearing ribbed fruit ( seeds ) and decompound leaves. [1913 Webster] 2. (Med.) The common hemlock ({Conium… …   The Collaborative International Dictionary of English

  • Conium maculatum —   cicuta …   Wikipedia Español

  • Conium maculatum — Grande ciguë Pour les articles homonymes, voir Ciguë …   Wikipédia en Français

  • Conium maculatum — Gefleckter Schierling Gefleckter Schierling (Conium maculatum) Systematik Unterklasse: Asternähnliche (Asteridae) …   Deutsch Wikipedia

  • Conium maculatum — Hemlock Hem lock, n. [OE. hemeluc, humloc, AS. hemlic, hymlic.] 1. (Bot.) The name of several poisonous umbelliferous herbs having finely cut leaves and small white flowers, as the {Cicuta maculata}, {Cicuta bulbifera}, and {Cicuta virosa}, and… …   The Collaborative International Dictionary of English

  • Conium maculatum — Hemlock Hem lock, n. [OE. hemeluc, humloc, AS. hemlic, hymlic.] 1. (Bot.) The name of several poisonous umbelliferous herbs having finely cut leaves and small white flowers, as the {Cicuta maculata}, {Cicuta bulbifera}, and {Cicuta virosa}, and… …   The Collaborative International Dictionary of English

  • Conium maculatum — dėmėtoji mauda statusas T sritis vardynas apibrėžtis Salierinių šeimos vaistinis nuodingas augalas (Conium maculatum), paplitęs Europoje, šiaurės Afrikoje ir Azijoje. atitikmenys: lot. Conium maculatum angl. carrot fern; fool s parsley; hemlock;… …   Lithuanian dictionary (lietuvių žodynas)

  • Conium maculatum — Conine Co nine (? or ?), n. [From {Conium}.] (Chem.) A powerful and very poisonous vegetable alkaloid found in the hemlock ({Conium maculatum}) and extracted as a colorless oil, {C8H17N}, of strong repulsive odor and acrid taste. It is regarded… …   The Collaborative International Dictionary of English

  • Conium maculatum — Conhydrine Con*hy drine (? or ?), n. [Conium + hydrate.] (Chem.) A vegetable alkaloid found with conine in the poison hemlock ({Conium maculatum}). It is a white crystalline substance, {C8H17NO}, easily convertible into conine. [1913 Webster] || …   The Collaborative International Dictionary of English

  • Conium maculatum — ID 21041 Symbol Key COMA2 Common Name poison hemlock Family Apiaceae Category Dicot Division Magnoliophyta US Nativity Introduced to U.S. US/NA Plant Yes State Distribution AL, AR, AZ, CA, CO, CT, DC, DE, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD,… …   USDA Plant Characteristics

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