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 (trī-ŏk′sīd′) also tri·ox·id (-ŏk′sĭd)
An oxide containing three oxygen atoms per molecule.
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.


(Elements & Compounds) any oxide that contains three oxygen atoms per molecule: sulphur trioxide, SO3.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(traɪˈɒk saɪd, -sɪd)

an oxide containing three oxygen atoms, as As2O3.
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.trioxide - an oxide containing three atoms of oxygen in the moleculetrioxide - an oxide containing three atoms of oxygen in the molecule
arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, ratsbane, white arsenic - a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
oxide - any compound of oxygen with another element or a radical
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Reaction of dogs' teeth to root canal filling with mineral trioxide aggregate or a glass ionomer sealer.
Cements- Portland Cement, Mineral trioxide aggregate (MTA), Biodentine (Septodont, France)
QT prolongation refers to the prolonged QT interval in electrocardiography (ECG) which can even lead to life-threatening events such as ventricular arrhythmias, torsades de pointes, etc., several drugs can cause QT prolongation which includes sotalol, quinidine, arsenic, disopyramide, procainamide, amiodarone, haloperidol, etc., Arsenic trioxide (ATO) is used as an effective treatment option in promyelocytic leukemia (PML).
With a reduced setting time compared to mineral trioxide aggregate (MTA), Biodentinetm is perhaps more user-friendly for perforation repair [12].
The use of chromium trioxide will be prohibited after 21st September 2017 unless an authorisation is in place to cover your use of the substance.
This case report describes non-surgical treatment with mineral trioxide aggregate (MTA) and a six-year follow-up of a maxillary lateral incisor, resorbed by ectopic eruption of the canine and affected by lateral luxation injury.
Materials used for indirect pulp capping included calcium hydroxide [Ca[(OH).sub.2]] cement (CHC), glass ionomer cement or resin-modified glass ionomer cement (GIC/RMGIC), Ca[(OH).sub.2] paste (CHP) and mineral trioxide aggregate (MTA).
Accordingly, various materials and techniques such as calcium hydroxide [8], ferric sulfate (FS) [9-11], mineral trioxide aggregate (MTA) [11-15], sodium hypochlorite [16], electrosurgery [17], and laser therapies [18,19] have been used for pulpotomies.
Mineral trioxide aggregate (MTA) has all of these characteristics and has been applied with good outcomes in root-end surgery, direct pulpal coverage, apexification, radicular resorption, and repair of lateral radicular and furcal perforation.
Arsenic trioxide, a natural substance that could inhibit cell proliferation and induce cell apoptosis, seems to be a promising surrogate of sirolimus to improve DES performance.
Background: Portland cement (PC), the base material of mineral trioxide aggregate has been applied in vivo and in vitro studies, and showed promising physical and mechanical properties on several cell lineages but human dental pulp stem cells (DPSCs), known as mesenchymal stem cells with their multipotency.
related to the achievement of sales milestones for TRISENOX (arsenic trioxide).