book lung

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book lung

n.
One of the paired saccular respiratory organs found in some arachnids, such as scorpions and spiders, consisting of several parallel membranous folds arranged like the pages in a book.
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.

book′ lung`


n.
the respiratory organ of many arachnids, composed of thin, paperlike layers of tissue.
[1895–1900]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

book lung

(bo͝ok)
The breathing organ of scorpions, spiders, and some other arachnids. It consists of membranes arranged in several parallel folds like the pages of a book.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.book lung - organ in many arachnids containing many thin folds of membrane resembling the leaves of a book
respiratory organ - any organ involved in the process of respiration
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References in periodicals archive
Two spiders ([M.sub.b]: A1 = 13.62 g; A2 = 16.8 g) were selected to estimate the volume of the book lung (i.e., respiratory zone of the atrium).
Respiratory refinements in the mygalomorph spider Grammostola rosea Walckenaer 1837 (Araneae, Theraphosidae)
The structure of the book lung (BL) in the abdomen of a lycosid spider is shown in Fig.
Cytochemical studies of RNA and basic nuclear proteins in lycosid spiders
Layered internal mesosomal organs were located and interpreted as probable book lungs (Kuhl et al.
The earliest record of terrestrial animals in Gondwana: a scorpion from the Famennian (Late Devonian) Witpoort Formation of South Africa
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