PISTON
\pˈɪstən], \pˈɪstən], \p_ˈɪ_s_t_ə_n]\
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By DataStellar Co., Ltd
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A small solid cylinder, fitting exactly and moving up and down by, or working against, a fluid, as, in the barrel of a pump, or in an engine cylinder.
By William Dodge Lewis, Edgar Arthur Singer
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A short solid cylinder, used in pumps, etc., fitting and moving up and down within another hollow one.
By Daniel Lyons
By James Champlin Fernald
Word of the day
Immunologic Desensitization
- Immunosuppression by the administration increasing doses antigen. Though exact mechanism is not clear, therapy results increase in serum levels of allergen-IMMUNOGLOBULIN G, suppression specific IgE, and an suppressor T-cell activity.