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
Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.