| bilaminar blastoderm | The blastoderm of a young embryo when it consists of only two of the three primary germ layers it will ultimately have. (05 Mar 2000) |
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| bilateral | <anatomy> Having two sides or pertaining to both sides. Origin: L. Latus = side (18 Nov 1997) |
| bilateral adrenal mass | <radiology> Acute granulomatous disease (e.g., TB), metastases (bilateral in 15%), pheochromocytoma (bilateral in 10%), adrenal hyperplasia (adenoma), spontaneous adrenal haemorrhage (12 Dec 1998) |
| bilateral hermaphroditism | True hermaphroditism with an ovotestis on both sides. (05 Mar 2000) |
| bilateral hydronephrosis | <nephrology, urology> Refers to the bilateral enlargement of the renal pelvis and calyces of the kidneys. This is not a disease itself but a finding associated with a variety of disease states which interfere with the drainage of urine from the kidneys to the ureters and into the bladder. Examples include acute and chronic bilateral obstructive uropathy, vesicoureteric reflux, ureteropelvic junction obstruction, neurogenic bladder, bladder outlet obstruction and prune belly syndrome. (27 Sep 1997) |
| bilateral large kidneys | <radiology> Autosomal dominant (adult) polycystic disease, lymphoma Cf: other urographic patterns (12 Dec 1998) |
| bilateral left-sidedness | A syndrome in which normally unpaired organs develop more symmetrically in mirror image; two spleens, one on each side, are usually present, and cardiovascular anomalies are common. Synonym: polysplenia syndrome. (05 Mar 2000) |
| bilateral mastectomy | <procedure, surgery> The surgical removal of both breasts. (09 Oct 1997) |
| bilateral medial orbital ecchymoses | <clinical sign, ophthalmology> The appearance of the eyes produced by subconjunctival haemorrhage and/or periorbital ecchymosis. Synonym: bilateral medial orbital ecchymoses. (21 Jun 2000) |
| bilateral pleurisy | Inflammation of the pleura on both sides of the thorax. Synonym: double pleurisy. (05 Mar 2000) |
| bilateral symmetry | <biology> Describes an organism which is divisible into equal mirror halves in one plane only. (09 Oct 1997) |
| bilateral synchrony | Electroencephalographic activity that is recorded over both hemispheres simultaneously; usually used in reference to spike and wave activity. (05 Mar 2000) |
| bilateralism | A condition in which the two sides are symmetrical. (05 Mar 2000) |
| bilaterally small, smooth kidneys | <radiology> Generalised atherosclerosis, nephrosclerosis - benign and malignant, atheroembolic renal disease, chronic glomerulonephritis, papillary necrosis, hereditary diseases, hereditary chronic nephritis (Alport's syndrome), medullary cystic disease, amyloidosis (late), arterial hypotension Cf: other urographic patterns (12 Dec 1998) |
| bilberry | Origin: Cf. Dan. Bollebaer bilberry, where bolle is perh. Akin to E. Ball. 1. <botany> The European whortleberry (Vaccinium myrtillus); also, its edible bluish black fruit. "There pinch the maids as blue as bilberry." (Shak) 2. <botany> Any similar plant or its fruit; especially, in America, the species Vaccinium myrtilloides, V. Caespitosum and V. Uliginosum. Source: Websters Dictionary (01 Mar 1998) |