arachnid |
<biology> An organism of the class Arachnida in the kingdom Animalia. For example: a spider. (09 Oct 1997) |
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arachnid vectors |
Members of the class arachnida, especially spiders, scorpions, mites, and ticks, which transmit infective organisms from one host to another or from an inanimate reservoir to an animate host. (12 Dec 1998) |
arachnida |
<zoology> One of the classes of Arthropoda. They have four pairs of legs, no antennae nor wings, a pair of mandibles, and one pair of maxillae or palpi. The head is usually consolidated with the thorax. The respiration is either by trancheae or by pulmonary sacs, or by both. The class includes three principal orders: Araneina, or spiders; Arthrogastra, including scorpions, etc.; and Acarina, or mites and ticks. Origin: NL, fr. Gr. Spider. Source: Websters Dictionary (01 Mar 1998) |
arachnidan |
<zoology> One of the Arachnida. Origin: Gr. Spider. Source: Websters Dictionary (01 Mar 1998) |
arachnidial |
<zoology> Of or pertaining to the Arachnida. Pertaining to the arachnidium. Source: Websters Dictionary (01 Mar 1998) |
arachnidism |
The condition produced by the bite of a venomous spider; spider envenomation. (12 Dec 1998) |
arachnidium |
<zoology> The glandular organ in which the material for the web of spiders is secreted. Origin: NL. See Arachnida. Source: Websters Dictionary (01 Mar 1998) |