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crab

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crab

(krab),
1. A crustacean, many varieties of which are edible.
2. An insect, the crab louse, Pthirus pubis.
Farlex Partner Medical Dictionary © Farlex 2012

crab

(krăb)
n.
1.
a. Any of various chiefly marine decapod crustaceans of the infraorder Brachyura, having a hard carapace that covers a broad flattened cephalothorax with a small abdomen tucked beneath it, and an anterior pair of legs that are large and pincerlike.
b. Any of various similar decapod crustaceans, such as a hermit crab or a king crab.
c. Crabmeat.
2.
a. A crab louse.
b. crabs Slang Infestation by crab lice.

crab′ber n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

crab

a decapod CRUSTACEAN (suborder Brachyura) characterized by a large flattened, laterally expanded carapace below which the abdomen is curled forward.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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References in periodicals archive
The diversity and richness of species of Anomura and Brachyura found in the present study can be considered high when compared to the study of Giraldes et al.
Nutritional vulnerability in zoeal stages of the yellowline arrow crab Slenorhynchus seticornis (Brachyura: Majoidea).
The marsh crab, Sartoriana rokitanskyi (Pretzmann, 1971)(Decapoda, Brachyura, Gecarcinucidae) from southern Iran.
Life history and population structure of the exploited mangrove crab Ucides cordatus cordatus (Linnaeus, 1763) (Decapoda: Brachyura) in the Caete Estuary, North Brazil.
1840) (Brachyura: Sesarmidae) exhibits four ovarian maturation stages [i.e., stage I (immature): ovary not differentiated, stage II (rudimentary): narrow pale cream or yellow filamentous ovaries, stage III (in development): small, bright orange ovaries with visible oocytes, and stage IV (developed): ovaries in advanced stage of maturation and occupying more space in the cephalothorax] as described by Leme (2005).
The marsh crab, Sodhiana rokitanskyi (Pretzmann, 1971) (Decapoda, Brachyura, Gecarcinucidae) from southern Iran.
& LIU, H.C., 2003.--On a new species of tree-climbing crab of the genus Labuanium (Crustacea: Decapoda: Brachyura: Sesarmidae) from Taiwan.
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