Glossary · Nouns · A
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TermTypeDefinitionClassificationsUpdated
Acid HydrogennounMWEa hydrogen atom in an acid that forms a positive ion when the acid dissociatesverified
Acid PrecipitationnounMWErain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with waterverified
Acid RainnounMWErain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with waterverified
Acid ValuenounMWEthe amount of free acid present in fat as measured by the milligrams of potassium hydroxide needed to neutralize itverified
Acid-Base BalancenounMWE(physiology) the normal equilibrium between acids and alkalis in the bodyverified
Acid-Base EquilibriumnounMWEthe normal equilibrium between acids and alkalis in the body, from physiologyverified
Acidemianouna blood disorder characterized by an increased concentration of hydrogen ions in the blood (which falls below 7 on the pH scale)verified
Acidic HydrogennounMWEa hydrogen atom in an acid that forms a positive ion when the acid dissociatesverified
Acidimetrynounvolumetric analysis using standard solutions of acids to measure the amount of a base presentverified
Acidosisnounabnormally high acidity (excess hydrogen-ion concentration) of the blood and other body tissuesverified
Acinusnounone of the small drupes making up an aggregate or multiple fruit like a blackberryverified
ACK PiggybackingnounMWEACK piggybacking is the practice of sending an ACK inside another packet going to the same destination.Threat
Aclinic LinenounMWEan imaginary line paralleling the equator where a magnetic needle has no dipverified
Acne RosaceanounMWEa skin disease of adults, more often women, in which blood vessels of the face enlarge resulting in a flushed appearanceverified
Aconitenounany of various usually poisonous plants of the genus Aconitum having tuberous roots and palmately lobed leaves and blue or white flowersverified
Acorn SquashnounMWEsquash plant bearing small acorn-shaped fruits having yellow flesh and dark green or yellow rind with longitudinal ridgesverified
Acoustic AphasianounMWEan impairment in understanding spoken language that is not attributable to hearing lossverified
Acoustic MeatusnounMWEeither of the passages in the outer ear from the auricle to the tympanic membraneverified
Acoustic ModemnounMWEa modem that converts electrical signals to telephone tones and back againverified
Acoustic NervenounMWEa composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochleaverified
Acoustic PhenomenonnounMWEa physical phenomenon associated with the production or transmission of soundverified
Acoustic Radiation PressurenounMWE(acoustics) the pressure exerted on a surface normal to the direction of propagation of a sound waveverified
Acoustic SpectrumnounMWEthe distribution of energy as a function of frequency for a particular sound sourceverified
Acquired HemochromatosisnounMWEhemochromatosis resulting from repeated transfusions or from excessive intake of foods containing ironverified
Acquired Immune Deficiency SyndromenounMWEa serious (often fatal) disease of the immune system transmitted through blood products especially by sexual contact or contaminated needlesverified
Acquired ImmunitynounMWEimmunity to a particular disease that is not innate but has been acquired during lifeverified
Acquired ReflexnounMWEan acquired response that is under the control of (conditional on the occurrence of) a stimulusverified
Acquirernouna corporation gaining financial control over another corporation or financial institution through a payment in cash or an exchange of stockverified
Acquirer FeenounMWEFee paid to the acquirer of the merchant sales draft. The acquirer of the sales draft collects a merchant discount fee (or processing fee) from the merchant for the costs associated with processing the transaction.RequirementRegulatedPCI
acquisitionnounThe purpose of this function is to manage the act of contracting, assuming, or acquiring possession of something.Process
Acresnounextensive landed property (especially in the country) retained by the owner for his own useverified
Acrocarpnouna moss in which the main axis is terminated by the archegonium (and hence the capsule)verified
Acrocarpous MossnounMWEa moss in which the main axis is terminated by the archegonium (and hence the capsule)verified
Acrocentric ChromosomenounMWEa chromosome with the centromere near one end so that one chromosomal arm is short and one is longverified