| arachnological | Of or pertaining to arachnology. Source: Websters Dictionary (01 Mar 1998) |
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| arachnologist | One who is versed in, or studies, arachnology. Source: Websters Dictionary (01 Mar 1998) |
| arachnology | <study> The department of zoology which treats of spiders and other Arachnida. Origin: Gr. Spider. (04 Mar 1998) |
| arachnolysin | A haemolytic substance in the venom of certain spiders. (05 Mar 2000) |
| arachnophobia | <psychology> Morbid fear of spiders. Synonym: arachnophobia. Origin: G. Arachne, spider, + phobos, fear (05 Mar 2000) |