मकड़ियों और टिक्स और बिच्छुओं और डैडी लोंगलेग सहित आर्थ्रोपोड्स का एक बड़ा वर्ग; पैरों के चार जोड़े और कोई पंख नहीं है

arachnida's Usage Examples:

The position of the Arachnida in the great sub-phylum Arthropoda, according to recent anatomical and embryological researches, is explained in the article Arthropoda.

Lamarck included the Thysanura and the Myriapoda in his class Arachnida.

ARACHNIDA, the zoological name given in 1815 by Lamarck (Gr.

The possession of silk-glands has also profoundly influenced the geographical distribution of spiders and has enabled them to cross arms of the sea and establish themselves on isolated oceanic islands which most of the orders of Arachnida are unable to reach.

Spiders, in short, must be regarded as the most highly organized and the most successful members of the class Arachnida.

SPIDERS, the common English name of Arachnida of the order Araneae, resembling the Pedipalpi in many structural points, but differing from them as well as from all other Arachnida in retaining short abdominal appendages known from their silk-manipulating function as spinnerets or spinning mamillae, with which are associated silk glands.

On either view it may be believed that the Hexapoda arose with the allied classes from a primitive arthropod stock, while the relationships of the class are with the Crustacea, the Chilopoda and the Diplopoda, rather than with the Arachnida.

Carpenter (1899, 1902-1904) has lately endeavoured to show an exact numerical correspondence in segmentation between the Hexapoda, the Crustacea, the Arachnida, and the most primitive of the Diplopoda.

BOOK-SCORPION, or FALSE SCORPION, minute arachnids superficially resembling tailless scorpions and belonging to the order Pseudoscorpiones of the class Arachnida.

Coxal glands have since been recognized and described in other Arachnida.

arachnida's Meaning':

a large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings

Synonyms:

order Pseudoscorpionida, order Uropygi, Phalangida, Scorpionida, order Acarina, arachnoid, order Araneae, order Phalangida, Pseudoscorpionida, order Opiliones, Opiliones, Acarina, order Scorpionida, Chelonethida, order Chelonethida, class Arachnida, Pseudoscorpiones, arachnid, Chelicerata, order Pseudoscorpiones, Uropygi, Araneae, Araneida, order Araneida, Pedipalpi, class, superclass Chelicerata, order Pedipalpi,

Antonyms:

inelegance,