physiological reaction

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• physiological reaction — noun an automatic instinctive unlearned reaction to a stimulus • Syn: ↑reflex, ↑reflex response, ↑reflex action, ↑instinctive reflex, ↑innate reflex, ↑inborn reflex, ↑unconditioned reflex …   Useful english dictionary

• reaction — n. 1) to cause, trigger a reaction 2) to encounter, meet with a reaction 3) an adverse, negative; favorable, positive; strong; weak reaction 4) an allergic; chain; chemical; delayed; knee jerk (usu. fig.); natural, normal; nuclear; physiological… …   Combinatory dictionary

• physiological time — Reaction Re*ac tion (r[ e]*[a^]k sh[u^]n), n. [Cf. F. r[ e]action.] 1. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action. [1913 Webster] 2. (Chem.) The mutual or reciprocal action of …   The Collaborative International Dictionary of English

• Physiological Assimilation —     Physiological Assimilation     † Catholic Encyclopedia ► Physiological Assimilation     In this sense the word may be defined as that vital function by which an organism changes nutrient material into living protoplasm.     Most modern… …   Catholic encyclopedia

• Reaction — Re*ac tion (r[ e]*[a^]k sh[u^]n), n. [Cf. F. r[ e]action.] 1. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action. [1913 Webster] 2. (Chem.) The mutual or reciprocal action of chemical …   The Collaborative International Dictionary of English

• Reaction time — Reaction Re*ac tion (r[ e]*[a^]k sh[u^]n), n. [Cf. F. r[ e]action.] 1. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action. [1913 Webster] 2. (Chem.) The mutual or reciprocal action of …   The Collaborative International Dictionary of English

• Reaction wheel — Reaction Re*ac tion (r[ e]*[a^]k sh[u^]n), n. [Cf. F. r[ e]action.] 1. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action. [1913 Webster] 2. (Chem.) The mutual or reciprocal action of …   The Collaborative International Dictionary of English

• reaction — (n.) 1610s, from RE (Cf. re ) again, anew + ACTION (Cf. action) (q.v.). Modeled on Fr. réaction, older It. reattione, from M.L. reactionem (nom. reactio), from L.L. react , pp. stem of reagere react, from re …   Etymology dictionary

• reaction — re•ac•tion [[t]riˈæk ʃən[/t]] n. 1) action in response to some influence, event, etc.: the nation s reaction to the president s speech[/ex] 2) med a) a physiological response to an action or condition b) a physiological change indicating… …   From formal English to slang

• Physiological tolerance — In physiology, tolerance occurs when an organism builds up a resistance to the effects of a substance after repeated exposure. This can occur with environmental substances such as salt or pesticides. It is also commonly encountered in… …   Wikipedia

• Acute stress reaction — This article is about the psychological condition sometimes called shock. For the circulatory condition, see shock (circulatory). Acute stress reaction Classification and external resources After being attacked and stabbed, Austrian empress… …   Wikipedia