| expectorant | 1. Promoting the ejection, by spitting, of mucus or other fluids from the lungs and trachea. 2. <pharmacology> An agent that promotes the ejection of mucus or exudate from the lungs, bronchi and trachea, sometimes extended to all remedies that quiet cough (antitussives). Origin: L. Pectus = breast (18 Nov 1997) |
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| expectorants | Agents that increase mucous excretion. Mucolytic agents, that is drugs that liquefy mucous secretions, are also included here. (12 Dec 1998) |
| expectorate | To spit; to eject saliva, mucus, or other fluid from the mouth. (05 Mar 2000) |
| expectorated | To have ejected material from the upper respiratory tract by spitting or coughing. (27 Sep 1997) |
| expectoration | 1. Mucus and other fluids formed in the air passages and upper food passages (the mouth), and expelled by coughing. See: sputum. 2. The act of spitting; the expelling from the mouth of saliva, mucus, and other material from the air or upper food passages. Synonym: spitting. (05 Mar 2000) |
| expedite | 1. To relieve of impediments; to facilitate; to accelerate the process or progress of; to hasten; to quicken; as, to expedite the growth of plants. "To expedite your glorious march." (Milton) 2. To despatch; to send forth; to issue officially. "Such charters be expedited of course." (Bacon) Origin: Expedited; Expediting. Source: Websters Dictionary (01 Mar 1998) |
| expeditions | Usually refers to planned scientific data-gathering excursions. (12 Dec 1998) |
| experience | The feeling of emotions and sensations, as opposed to thinking; involvement in what is happening rather than abstract reflection on an event or interpersonal encounter. Origin: L. Experientia, fr. Experior, to try (05 Mar 2000) |
| experienced | Taught by practice or by repeated observations; skillful or wise by means of trials, use, or observation; as, an experienced physician, workman, soldier; an experienced eye. "The ablest and most experienced statesmen." (Bancroft) Source: Websters Dictionary (01 Mar 1998) |
| experiment | Noun: A procedure done in a controlled environment for the purpose of gathering observations, data, or facts, demonstrating known facts or theories, or testing hypotheses or theories. Verb: To carry out such a procedure. (09 Oct 1997) |
| experimental | 1. Of, relating to or based on experience: empirical. 2. Of a disease: intentionally produced especially in laboratory animals for the purpose of study. (18 Nov 1997) |
| experimental allergic encephalitis | <pathology> An autoimmune disease that can be induced in various experimental animals by the injection of homogenised brain or spinal cord in Freund's adjuvant. The antigen appears to be a basic protein present in myelin and the response is characterised by focal areas of lymphocyte and macrophage infiltration into the brain, associated with demyelination and destruction of the blood-brain barrier. Sometimes used as a model for demyelinating diseases, although whether this is entirely justifiable is not clear. (18 Nov 1997) |
| experimental allergic encephalomyelitis | <pathology> An autoimmune disease that can be induced in various experimental animals by the injection of homogenised brain or spinal cord in Freund's adjuvant. The antigen appears to be a basic protein present in myelin and the response is characterised by focal areas of lymphocyte and macrophage infiltration into the brain, associated with demyelination and destruction of the blood-brain barrier. Sometimes used as a model for demyelinating diseases, although whether this is entirely justifiable is not clear. (18 Nov 1997) |
| experimental error | The total error of measurement ascribed to the conduct of an empirical observation. It is commonly expressed as the standard deviation of replicated experiments. There may be many components, including those in the sampling procedure, the measurements, injudicious choice of a model, observer bias, etc. (05 Mar 2000) |
| experimental group | A group of subjects exposed to the variable of an experiment, as opposed to the control group. (05 Mar 2000) |