Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ornithuran Synonym of ornithurine. ornithurine A bird of the clade Ornithurae. ornithuromorph Any bird of the group Ornithuromorpha. Ornsay A small island opposite the village of Isleornsay, on the coast of the Isle of Skye, Highland council area, Scotland (OS grid ref NG7112) Ornsby A surname. Oro A surname. oroalimentary Relating to the mouth and to digestion oroanal Involving the mouth and anus. oroantral Relating to the oral and antral cavities. oroarctic Relating to mountains in Arctic regions. orobanchaceous Belonging to the family Orobanchaceae, plants mostly parasitic on the roots of other plants. orobanchol A strigolactone that acts as a germination stimulant orobanchyl The univalent radical derived from orobanchol oroblanco A hybrid fruit developed by crossing a pomelo and a white grapefruit. When fully developed, it is approximately the size of a grapefruit. orobol An isoflavone, found in Aspergillus niger and Streptomyces neyagawaensis, that is a potent inhibitor of phosphoinositide 3-kinase. orobranchial Relating to the mouth and the gills orobuccal Relating to the mouth and the cheek orocephalic Relating to the mouth and the head orocervical Relating to the mouth and the neck Oroch A member of an ethnic group inhabiting the southern part of Khabarovsk Krai in Far Eastern Russia. Orocio A surname from Spanish. oroclinal Relating to an orocline. orocline A mountain belt whose process of deformation is visible. Orocovis A town and municipality of Puerto Rico. orocutaneous Relating to both the mouth and skin, as for example (a) a rash or lesion affecting both the oral mucosa and the perioral skin or (b) a fistula connecting the oral cavity to the skin of the cheek. orodental Relating to the mouth and the teeth Orodes any of several rulers of Parthian Empire and kings of its nearby kingdoms including Elymais, Armenia, and Hatra orodigestive Relating to the mouth and the digestive tract. orodispersible Describing a tablet designed to disintegrate in the mouth orodontid Any extinct cartilaginous fish in the family Orodontidae. orodromine Any dinosaur in the family Orodromeus, believed to be a synonym of the Parksosauridae or the Hypsilophodontidae. oroduodenal Relating to, or connecting the mouth and the duodenum orodynia glossodynia oroesophageal Of or relating to the mouth and the esophagus. orofacial Of or affecting both the mouth and face. orofaciodigital Affecting the mouth, face, and digits. orofecal transmitted from feces to the mouth. orofecally By the orofecal route. Orofino A city, the county seat of Clearwater County, Idaho, United States. orogastric Of or pertaining to the mouth and the stomach; usually with reference to an enteral feeding tube passing through the mouth and into the stomach. orogastrically By means of, or with reference to the mouth and the stomach orogastroduodenal Relating to the mouth, stomach and duodenum orogastrointestinal Relating to the mouth, stomach and intestines. orogen Rock deformed by orogeny; a belt of such rock(s). orogenesis The process of mountain formation by deformation of the Earth's crust. orogenetic Relating to orogenesis. orogenic Concerned with orogeny; pertaining to the creation of mountains. orogenically In terms of, or by means of, orogeny. orogenital Involving the mouth and the genitals. orogenous Of or relating to mountain-building; orogenic. orogeny The process of mountain building by the upward folding of the Earth's crust. orograph A machine for use in making topographical maps, operated by being pushed across country, and recording distances and elevations. orographer A specialist in orography. orographic Of or pertaining to the physical features of mountains, or to orography. orographically In terms of or by means of orography. orography The scientific study, or a physical description of mountains. oroheliograph A camera for obtaining a circular panoramic view of the horizon. The photographic plate is placed horizontally with a vertical lens above. A specially-shaped mirror reflects light from the entire horizon to the lens, by means of which it is focused upon the plate. orohypopharyngeal Relating to the orohypopharynx orohypopharynx The mouth and hypopharynx treated as a unit oroide An alloy of copper and zinc or tin that has a gold color, used in making inexpensive jewelry. oroidin Any of a family of alkaloids derived from marine sponges Orok A member of an ethnic group that lives in the Sakhalin Orokaiva An indigenous group of people in Oro Province, Papua New Guinea. Oroko A Sawa Bantu dialect cluster spoken in Cameroon. Orokolo A Trans–New Guinea language spoken of Papua New Guinea. orolabial Relating to the mouth and lips. orolaryngeal Relating to the mouth and the larynx orolarynx The oral part of the larynx orolingual Relating to the mouth and tongue. orological Of or pertaining to orology. orologically In terms of orology. orologist an expert in orology. orology The study or science of mountains and their formation. oromandibular Relating to the mouth and mandible. oromanual Relating to the mouth and the hands oromaxillary Relating to the mouth and the maxilla. oromaxillofacial Relating to the mouth, jaw, and face. oromediterranean Relating to mountainous parts of the Mediterranean region oromerycid Any member of the family †Oromerycidae, extinct relatives of camels. orometer An aneroid barometer having a second scale that gives the approximate elevation above sea level of the place where the observation is made. orometric Pertaining to orometry. Pertaining to measuring mountains. orometrics The discipline of orometry, the statistics of measuring the physical features of mountains. orometry The measurement of mountains. Oromia The largest and most populous region in Ethiopia, covering an area of approximately 353,006 square kilometers. Oromian Of or from Oromia Oromo A member of a people of eastern Africa, Ethiopia and northern Kenya. Oromocto A river in New Brunswick, Canada. oromotor Relating to the movement of the mouth. oromucosal Relating to, or directed towards the mucous surfaces of the mouth (cheek). oromucosally In an oromucosal manner Oron A commune in Moselle department, Grand Est, France. oronasal Of or pertaining to the mouth and the nose oronasally In an oronasal manner oronasopharyngeal Relating to the oronasopharynx oronasopharynx The mouth, nose and pharynx Orong A gewog of Samdrup Jongkhar District, Bhutan. Orono A community in the municipality of Clarington, Regional Municipality of Durham, Ontario, Canada. Orontean Of or relating to the Orontes. Orontes A river in West Asia, about 400 km (250 mi) long, flowing from Lebanon through Syria before entering the Mediterranean Sea near Samandağ in Turkey. oronym The name of a mountain. oronymy The nomenclature of mountains, hills and other geographic rises. oropendola Any of a number of tropical birds related to the caciques, mostly in the genus Psarocolius, and, like the caciques, noted for living communally in large, hanging basket nests. Oropesa A streamlined towed body used in minesweeping to keep the towed sweep at a determined depth and position relative to the sweeping ship. Oropeza A surname from Spanish oropharyngeal Of or pertaining to both the mouth and the pharynx. oropharyngeally In an oropharyngeal manner oropharyngoesophageal Of or relating to the mouth, the pharynx and the esophagus. oropharyngoscopy endoscopy of the oropharynx oropharynx The oral part of the pharynx, reaching from the uvula to the level of the hyoid bone. orophilic orophilous orophilous Liking a subalpine habitat. orophyte Any plant that grows in a subalpine habitat. Oropom Any of the aboriginal inhabitants of much of Karamoja in Uganda and probably Turkana District in Kenya. Oroqen A member of an ethnic group inhabiting parts of Northern China. Oroquieta A city, the provincial capital of Misamis Occidental, Northern Mindanao, Philippines. ororotundity The quality of being orotund (in various senses); orotundity. oroselone The furanocoumarin 8-prop-1-en-2-ylfuro[2,3-h]chromen-2-one present in angelica orosensation A false sensation of taste obtained by stimulation of the tongue. orosensory Relating to oral senses (e.g., taste, oral kinesthetic sense), and especially the innervation that provides for them. Orosi A census-designated place in Tulare County, California, United States. Orosian Of or relating to Paulus Orosius (born c. 375/385 – c. 420 AD), Roman priest, historian and theologian. Orosirian Of a geologic period within the Paleoproterozoic era from about 2050 to 1800 million years ago. Oroslav A male given name from the Slavic languages. Oroslavlje A town in Croatia. orosomucoid An acidoglycoprotein found in blood plasma orosphere A clump of oral cancer cells Orosz A surname from Hungarian. orotactile That has to do with the sense of touch in mouth. orotate Any salt or ester of orotic acid. orotemperate Describing a temperate mountain climate orotherapy The use of serum to treat disease. orotic Of or pertaining to orotic acid or its derivatives orotidine A nucleoside formed by reaction of orotic acid with ribose orotidylate orotidine 5'-phosphate orotomide Any of a particular class of antifungal agents orotone A photographic print on glass, decorated with gold leaf or coloured with a gold pigment. orotopical Applied topically to the mouth. orotracheal Of or pertaining to the mouth and the trachea orotracheally In an orotracheal manner orotund Of a voice: characterized by clarity, fullness, smoothness, and strength of sound; hence, of a person: having a clear, full, and strong voice, appropriate for public speaking, reading aloud, etc. orotundity The quality of being orotund. orotundly In an orotund manner. Orovada A census-designated place in Humboldt County, Nevada, United States. orovaginal oral and vaginal Oroville A city, the county seat of Butte County, California, United States. Orowan A surname oroxylin Any of a group of methylated flavones present in plants of the genus Oroxylum oroxyloside Any glycoside of an oroxylin oroxylum Synonym of midnight horror oroya A hanging basket attached to a cable, anciently used in South America to cross ravines.