choroid


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cho·roid

 (kôr′oid′) or cho·ri·oid (kôr′ē-oid′)
n.
The dark-brown vascular coat of the eye between the sclera and the retina. Also called choroid coat, choroid membrane.
adj.
1. Resembling the chorion; membranous.
2. Of or relating to the choroid.

[From Greek khoroeidēs, like an afterbirth, alteration of khorioeidēs : khorion, afterbirth; see chorion + -oeidēs, -oid.]
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.

choroid

(ˈkɔːrɔɪd) or

chorioid

adj
(Anatomy) resembling the chorion, esp in being vascular
n
(Anatomy) the brownish vascular membrane of the eyeball between the sclera and the retina
[C18: from Greek khoroeidēs, erroneously for khorioeidēs, from chorion]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

cho•roid

(ˈkɔr ɔɪd, ˈkoʊr-)
adj.
1. Also, cho•roi′dal. like the chorion; membranous.
n.
[1625–35; < Greek choroeidḗs false reading for chorioeidḗs; see chorion, -oid]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

choroid

The eyeball’s dark middle layer.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.choroid - a highly vascular membrane in the eye between the retina and the sclerachoroid - a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye
eye, oculus, optic - the organ of sight
tissue layer, membrane - a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
suonikalvo
naczyniówka

choroid

[ˈkɔːrɔɪd] n (Anat) → coroide f
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

cho·roid

n. coroides, membrana situada en el ojo al que nutre con la sangre.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
Following completion of the third ventriculostomy, endoscopic monopolar cautery was applied to dorsal portion of choroid plexus from foramen of Monro to trigone of the right lateral ventricle without injury to the septal vein, the thalamostriate vein, or the thalamus.
The microscopic examination of the eye contents revealed a diffuse lymphoid tumor infiltrating the choroid and totally replacing the retina (Figure 1(a)) with plasmablastic morphology composed of large cells with abundant basophilic cytoplasm, oval eccentric nuclei, and evident nucleoli (Figure 1(b)).
To overcome the above indicated limitations of subretinal cell transplantation, we have developed a novel method of cell transplantation into the extravascular spaces of the choroid (EVSC) underlying the retina.
Although the macular anatomy has been well studied using OCT, the follow-up and quantification of foveal retinal thickness and choroid thickness in XLRS patients have not been well documented [8].
BASEL, Switzerland, July 21, 2016 -- The choroid plexus, a largely ignored structure in the brain that produces the cerebrospinal fluid, is an important regulator of adult neural stem cells, research indicates.
Consistent SVA IHC staining occurred at the transitional epithelium of the renal pelvis and the urinary bladder (Figure 1, panel D) of 4 piglets; within epithelial cells of the choroid plexus of the cerebrum (8 piglets) and the tongue (5 piglets); and at the ependymal cells of the choroid plexus, vascular endothelium, and the enterocytes of the villi of the small intestine (2 piglets) (Table 2, http://wwwnc.cdc.gov/EID/article/22/7/15-1583-T2.htm).
These were characterized by absence of pigmentation in retinal pigment epithelium and in choroid, causing white sclera to become visible between choroidal blood vessels.
NTCELL is a choroid plexus cell product with the potential to treat neurodegenerative diseases.
Advancements particularly in optical coherence tomography (OCT) technology enabled high-resolution and noninvasive imaging of the retina and choroid. A number of local and physiological/pathological conditions may affect CT [2].
When administered topically, drug concentrations in the retina and choroid are many-fold lower than the tear fluid.
Hanna was diagnosed with choroid plexus carcinoma - a cancer that presents as a fast-growing brain tumour.