EXPANSION-VALVE
\ɛkspˈanʃənvˈalv], \ɛkspˈanʃənvˈalv], \ɛ_k_s_p_ˈa_n_ʃ_ə_n_v_ˈa_l_v]\
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In a steam-engine, a valve which shuts off the steam in its passage to the slide-valves, when the piston has travelled a certain distance in the cylinder, leaving the remaining part of the stroke to be performed by the expansion of the steam.
By Daniel Lyons
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.