online medical dictionary | definition of hemic

<anatomy> A lateral half of the heart, either the right or left.

Origin: NL. See Hemi-, and Cardia.

(01 Mar 1998)

<anatomy, cardiology> Right side of the heart.

(05 Mar 2000)

<anatomy, cardiology> Left side of the heart.

(05 Mar 2000)

<botany> One portion of a fruit that spontaneously divides into halves.

Origin: Hemi- + Gr. Fruit.

(01 Mar 1998)

<plant biology> Class of plant cell wall polysaccharide that cannot be extracted from the wall by hot water or chelating agents, but can be extracted by aqueous alkali. Includes xylan, glucuronoxylan, arabinoxylan, arabinogalactan II, glucomannan, xyloglucan and galactomannan. Part of the cell wall matrix.

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)

<anatomy> One of the two lateral halves of the body of the vertebra.

Origin: hemi-+ G. Kentron, centre

(05 Mar 2000)

<symptom>

<neurology> The unilateral headache characteristic of typical migraine.

Synonyms: hemicrania.

Origin: hemi-+ G. Kephale, head, + algos, pain

(05 Mar 2000)

<embryology> Congenital failure of the cerebrum to develop normally; usually the cerebellum and basal ganglia are represented at least in rudimentary form.

Synonyms: partial anencephaly.

Origin: hemi-+ G. Kephale, head

(05 Mar 2000)

<embryology> A congenital defect where half of the brain (specifically, one side of the cerebrum, which is the largest part of the brain) does not develop in the foetus.

The cerebellum and basal ganglia may still develop somewhat.

(09 Oct 1997)

<anatomy> A lateral half of the cerebrum.

Origin: Hemi- + cerebrum.

(01 Mar 1998)

A chemical which interferes with the synthesis of acetylcholine in cholinergic nerve terminals.

(05 Mar 2000)

<chemical>

A potent inhibitor of the high affinity uptake system for choline. It has less effect on the low affinity uptake system. Since choline is one of the components of acetylcholine, treatment with hemicholinium can deplete acetylcholine from cholinergic terminals. Hemicholinium 3 is commonly used as a research tool in animal and in vitro experiments.

Pharmacological action: cholinergic agents, neurotransmitter uptake inhibitors.

Chemical name: Morpholinium, 2,2'-(1,1'-biphenyl)-4,4'-diylbis(2-hydroxy-4,4-dimethyl-, dibromide

(12 Dec 1998)

Chorea involving the muscles on one side only.

Synonyms: chorea dimidiata, hemilateral chorea.

(05 Mar 2000)

<procedure>

<surgery> Removal of the right or left side of the colon.

Origin: hemi-+ G. Kolon, colon, + ektome, excision

(05 Mar 2000)

<physiology> See Semiglutin.

Origin: Hemi- + collin.

(01 Mar 1998)

<procedure>

<surgery> Surgical removal of the lower half of the body, including the lower extremities, bony pelvis, genitalia, and various of the pelvic contents including the lower part of the rectum to the anus.

Origin: hemi-+ L. Corpus, body, + G. Ektome, excision

(05 Mar 2000)

<medicine> A pain that affects only one side of the head.

Origin: L., cf. F. Hemicranie. See Cranium, and Megrim.

(01 Mar 1998)

<procedure>

Synonyms: hemicraniotomy.

Origin: hemi-+ G. Kranion, skull, + ektome, excision

(05 Mar 2000)

Enlargement of one side of the cranium.

(05 Mar 2000)

<procedure>

<surgery> Separation and reflection of the greater part or all of one half of the cranium, as a preliminary to an operation upon the brain.

Synonyms: hemicraniectomy.

Origin: hemi-+ G. Kranion, skull, + tome, cut

(05 Mar 2000)

<medicine> Hemicranis.

(01 Mar 1998)

<botany> A perennial plant having its overwintering buds located at the soil surface.

(09 Oct 1997)