ria

(ˈriːə) n (Physical Geography) a long narrow inlet of the seacoast, being a former valley that was submerged by a rise in the level of the sea. Rias are found esp on the coasts of SW Ireland and NW Spain[C19: from Spanish, from rio river]

RIA

abbreviation for (Education) Royal Irish Academy

ria

A drowned river valley, forming a long, narrow, funnelshaped inlet at right angles to the sea.

RIA

ria

[′rē·ə] (geography) Any broad, estuarine river mouth. A long, narrow coastal inlet, except a fjord, whose depth and width gradually and uniformly diminish inland.

RIA

(1) (Rich Internet Application) An application that approaches the speed and elegance of a locally installed application. An RIA typically refers to an app that uses the Web browser to run embedded scripts within Web pages. However, it may also refer to a "rich client application" that interacts with the Internet in some manner but does not run from the browser (see rich client). See Silverlight, Flex and AJAX.

(2) (Regulatory Impact Analysis) See healthcare IT.

RIA

radioimmunoassay

(RIA) [ra″de-o-im″u-no-as´a] a sensitive assay method that can be used for the measurement of minute quantities of specific antibodies or any antigen, such as a hormone or drug, against which specific antibodies can be raised. An assay for a specific hormone uses antihormone antibody produced by injecting the human hormone into an animal, such as a rabbit, and hormone that has been labeled with a radioisotope. These are mixed with the assay specimen and the antigen (hormone) bound to antibody is separated from the unbound antigen by chromatography or other means. Because any hormone in the assay specimen competes with the radiolabeled hormone for antibody binding sites, the amount of hormone in the specimen is inversely proportional to the radioactivity of the bound fraction or directly proportional to the activity of the free fraction. This is the standard method for clinical laboratory measurements of hormones and is also used for therapeutic drug monitoring, drug abuse screening, and other laboratory tests.

RIA

Abbreviation for radioimmunoassay.

RIA

abbr. radioimmunoassay

RIA

Abbreviation for radioimmunoassay.

RIA

Acronym	Definition
RIA➣Regulatory Impact Assessment
RIA➣Rock Island Arsenal (US Army)
RIA➣Regulatory Impact Analysis
RIA➣Rialto (Amtrak station code; Rialto, CA)
RIA➣Rights in Action (various organizations)
RIA➣Research in Action
RIA➣Registered Investment Advisor
RIA➣Rich Internet Application
RIA➣Royal Irish Academy
RIA➣Radioimmunoassay
RIA➣Research and Innovation Actions (Horizon 2020; EU)
RIA➣Radiation Induced Attenuation (optical fibers)
RIA➣Rich Internet Applications
RIA➣Relay Interface Adapter
RIA➣Revue d'Intelligence Artificielle (French: Journal of Artificial Intelligence)
RIA➣Russian Information Agency
RIA➣Research Institute on Addictions
RIA➣Rottnest Island Authority (Australia)
RIA➣Research Institute of America (tax research firm)
RIA➣Rare Isotope Accelerator
RIA➣Robotics Industries Association
RIA➣Risk Impact Assessment
RIA➣Railway Industry Association (UK)
RIA➣Regional Integration Arrangement (various organizations)
RIA➣Reactivity-Initiated Accident
RIA➣Radiosonde Initial Analysis
RIA➣Research Initiation Award
RIA➣Revue de l'Industrie Agroalimentaire (French: Journal of the Food Industry)
RIA➣Radioiodine Ablation
RIA➣Related Instructor Activity (US Navy)
RIA➣Reactivity Insertion Accident
RIA➣Régiment d'Infanterie Alpine (French: Alpine Infantry Regiment)
RIA➣Rich International Airways (Miami, Florida)
RIA➣Regional Internet Australia
RIA➣Rapid Impact Assessment
RIA➣Runway Independent Aircraft
RIA➣Remote Internet Access
RIA➣Registered Industrial Accountant (Canada)
RIA➣Relativistic Impulse Approximation
RIA➣Random Insanity Alliance (gaming clan; Cyber Nations)
RIA➣Revolution in Intelligence Affairs
RIA➣Regional Inuit Association (Canada)
RIA➣Robinets d'Incendie Armé (French fire extinguisher)
RIA➣Right Iliac Artery
RIA➣Rosettanet Integration Architecture
RIA➣Resource Impact Assessment
RIA➣Range Insensitive Axis
RIA➣Rack Interface Agreement
RIA➣Recommended Improvement Area
RIA➣Regional Incentive Agreement (Government pricing agreement term)
RIA➣Rheumatology, Immunology and Allergy Division (various locations)
RIA➣Réseau Incendie Armée
RIA➣Réunions Internationales d'Architectes (French: International Meetings of Architects)
RIA➣Reserve Intelligence Unit
RIA➣Roofing Installation Application
RIA➣Reprogramming Interface Assembly