(n.) A union of three; three objects treated as one; a ternary; a trinity; as, a triad of deities.
(n.) A chord of three notes.
(n.) The common chord, consisting of a tone with its third and fifth, with or without the octave.
(n.) An element or radical whose valence is three.
Example Sentences:
(1) The triad of epigastric pain unrelieved by antacids, bilious vomiting, and weight loss, particularly after a gastric operation should make one suspect this syndrome.
(2) The syndrome initially described by Behçet in 1937 comprised the triad of ocular inflammation, oral and genital ulcers.
(3) The diagnostic triad of pneumoperitoneum on x-ray, evidence or history of CMV infection, and AIDS occurred in 70 percent of patients.
(4) The characteristic signs and symptoms represent the triad of a pulsatile mass in the upper part of the abdomen, intermittent hemorrhage in the upper part of the gastrointestinal tract and severe epigastralgia not relieved by antacids.
(5) Cardiac myxomas typically present as a triad of obstructive, embolic, and constitutional symptoms and thus mimic many more common systemic illnesses.
(6) A mother and daughter both presented at age 5 years with the triad of right-sided congenital cholesteatoma, right preauricular pits, and bilateral sensorineural hearing loss.
(7) Traumatic hemobilia is commonly associated with cavitary injuries to the liver, and is classically characterized by a triad of findings: GI bleeding, biliary colic, and jaundice.
(8) The tryptase sequence includes the essential residues of the catalytic triad and an aspartic acid at the base of the putative substrate binding pocket that confers P1 Arg and Lys specificity on tryptic serine proteases.
(9) The authors observed in one child and AGR triad and in two patients deformities of the skeleton of the head and lower extremities.
(10) The prospects of further progress in radiation therapy, based on the triad of patient care, teaching and research, now seem assured.
(11) Dermatopathia pigmentosa reticularis is a rare heritable disorder consisting of a triad of cutaneous findings including reticulate hyperpigmentation, noncicatricial alopecia, and onychodystrophy.
(12) The classical triad of symptoms seen in hemochromatosis (cirrhosis of the liver, diabetes mellitus, and skin pigmentation) are often supplemented by cardiomyopathy.
(13) The clinical history of acute pyelonephritis, avascular mass lesion of the kidney with ipsilateral pleural effusion (triad) seen in a female patient of child-bearing age is characteristic of this condition.
(14) In contrast, changes at Arg-7, Lys-12 and any one proline residue in the triad moderately reduced, and substitution of Lys-19 showed little effect on, activity.
(15) Four of the six patients had a progressive triad of ear pain, facial paralysis, and sensory loss in the second and third divisions of the trigeminal nerve.
(16) Skeletal muscle triads are possessing the whole set of enzymes of the phosphatidylinositol (PI)-linked signal generating pathway, PI-kinase, PI(4)P-kinase, and PI(4,5)P2-phospholipase C (PLC).
(17) In the present experiments, neurons were plated together in close apposition as pairs or as triads, with the tip of one Retzius cell touching the soma of another.
(18) The triad of generalized seborrheic dermatitis, failure to thrive, and diarrhea in an infant should bring to mind Leiner disease or severe combined immunodeficiency disease.
(19) These structures were concentrated in the perinuclear regions of peripheral muscle nuclei and were less abundant about the triad regions.
(20) A liver biopsy was performed in one patient 8 months after total pancreatectomy and islet autotransplantation; numerous clusters of islet cells staining strongly for insulin and glucagon were detected within portal triads on both wedge and needle biopsy specimens.