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Adduction

Noun, pl. adductions 1. (Science: anatomy, orthopaedics) Movement of the limbs toward the medial plane of the body or toward the axial line of the limb....

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Adenine

/ˈadnˌēn/ Noun 1. A nucleobase (a purine derivative) with a variety of roles in biochemistry including cellular respiration, in the form of both the energy-rich adenosine triphosphate (ATP) and the cofactors nicotinamide adenine dinucleotide (NAD) and flavin adenine dinucleotide (FAD), and protein synthesis, as a chemical component of DNA and RNA.[2] The shape of adenine is complementary to either thymine in DNA or uracil in RNA. (wikipedia.org) 2. (Biochemistry) A nitrogenous base, one member of the basepair A-T (adenine-thymine). (biology-online.org) 3. (Biochemistry) Purine base found in DNA paired with thymine, in RNA paired with uracil. Adenine is one of the bases that form part of a nucleotide, the structures that are present in DNA chains. (biology-online.org) 4. A purine base, C5H5N5, one of the fundamental components of nucleic acids, as DNA, in which it forms a base pair with thymine, and RNA, in which it pairs with uracil. Symbol: A...

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Adventitia

/ˌadvenˈtiSH(ē)ə/ Noun 1. The outermost connective tissue covering of any organ, vessel, or other structure.(wikipedia.org) 2. The outermost layer of the wall of a blood vessel. (Google Dictionary) 3. The external covering of an organ or other structure, derived from connective tissue, especially the external covering of a blood vessel. (dictionary.reference.com) 4. The outermost connective tissue covering of any organ, vessel, or other structure not covered by a serosa; instead, the covering is properly derived from without (i.e., from the surrounding connective tissue) and does not form an integral part of such organ or structure. (biology-online.org) Adjective: adventitial Synonym: tunica adventitia, membrana adventitia Word origin: Latin adventīcia, neuter plural of adventīcius...

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Adventitia

/ˌadvenˈtiSH(ē)ə/ Noun 1. The outermost connective tissue covering of any organ, vessel, or other structure.(wikipedia.org) 2. The outermost layer of epithelial tissue encasing a visceral organ. (wiktionary.org) 3. The outermost connective tissue covering of any organ, vessel, or other structure not covered by a serosa; instead, the covering is properly derived from without (i.e., from the surrounding connective tissue) and does not form an integral part of such organ or structure. (biology-online.org) 4. An enveloping or covering membrane or layer of body tissue. (wordnetweb.princeton.edu) Syn: tunica adventitia, membrana adventitia, tunica externa. Word origin: From Latin adventicius, coming from abroad, foreign, fr. Ad, to _ venio, to...

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Aerobiologist

Noun, pl. aerobiologists Aerobiologists have traditionally been involved in the measurement and reporting of airborne pollen and fungal spores as a service to allergy sufferers (Larsson, 1993).

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