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The poison hemlock.

[Late Latin cōnium, from Greek kōneion, probably from kōna, liquid pitch.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Plants) either of the two N temperate plants of the umbelliferous genus Conium, esp hemlock
2. (Pharmacology) an extract of either of these plants, formerly used to treat spasmodic disorders
[C19: from Late Latin: hemlock, from Greek kōneion; perhaps related to Greek kōnos cone]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈkoʊ ni əm)

the poison hemlock, Conium maculatum.
[1860–65; < New Latin, Late Latin < Greek kṓneion]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.conium - small genus of highly toxic biennials: hemlockConium - small genus of highly toxic biennials: hemlock
rosid dicot genus - a genus of dicotyledonous plants
Apiaceae, carrot family, family Apiaceae, family Umbelliferae, Umbelliferae - plants having flowers in umbels: parsley; carrot; anise; caraway; celery; dill
Nebraska fern, poison hemlock, poison parsley, winter fern, California fern, Conium maculatum, hemlock - large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
All parts of this plant (Conium maculatum) are very poisonous and it can be easily confused with others of the Umbelliferae such as the wild carrot (Daucus carota).
###***Scorzonera, Ajuga, Salvia, Lamiaceae, Brassica rapa, Conium maculatum, Olea europe-
Conium maculatum (poison hemlock) (Figure 1) is known as one of the
She responded beautifully to homeopathic Conium (hemlock), which is a common homeopathic remedy for dizziness.
In total, there were at least one of the 9 ground cover species (Veronica persica, Bellis perennis, Urtica subsp., Taraxacum officinale, Conium maculatum, Lotus comiculatus, Lamium purpureum, Rumex potentia and Brassica nigra) in front of 36 buildings (Figure / Sekil 16).
Amaranthaceae AMARYLLIDACEAE Amaryllidaceae ANACARDIACEAE Schinus molle * APIACEAE Apiaceae Conium maculatum ASTERACEAE Ageratina sp.
in mice [149] and yconiceine, isolated from Conium maculatum, had an [LD.sub.50] = 12 mg/kg p.o in mice [150].
Invasive species included poison hemlock Conium maculatum in the habitat and purple star-thistle nearby, which the landowners were attempting to eradicate.
Scientific name Common name Pre-1940 Alliaria petiolata garlic mustard Artemesia vulgaris mugwort Carduus nutans (D) musk thistle Centaurea stoebe spotted knapweed Cirsium arvense Canada thistle x Cirsium vulgare bull thistle x Clematis terniflora sweet autumn clematis Conium maculatum (D) poison hemlock Convolvulus arvense field bindweed x Coronilla varia (P) crown vetch x Cynanchum louiseae black swallow-wort x Daucus carota Queen Anne's lace x Dioscorea polystachya (D) Chinese yam Dipsacus fullonum common teasel x Dipsacus laciniatus cut-leaved teasel x Euphorbia esula leafy spurge x Glechoma hederacea creeping Charlie x Hesperis matronalis dame's rocket x Humulus japonicus (D) Japanese hops Hypericum perforatum St.