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symbolic logic

(Encyclopedia)symbolic logic or mathematical logic, formalized system of deductive logic, employing abstract symbols for the various aspects of natural language. Symbolic logic draws on the concepts and techniques ...

malice

(Encyclopedia)malice, in law, an intentional violation of the law of crimes or torts that injures another person. Malice need not involve a malignant spirit or the definite intent to do harm. To prove malice, it is...

hand, foot, and mouth disease

(Encyclopedia)hand, foot, and mouth disease (HFMD), infectious viral disease that most commonly occurs in children under five years of age. Symptoms include fever, poor appetite, and a sore throat, followed by pain...

pneumothorax

(Encyclopedia)pneumothorax no͞omōthôrˈăks [key], collapse of a lung with escape of air into the pleural cavity between the lung and the chest wall. The cause may be traumatic (e.g., gunshot or stab wound), spo...

prejudice

(Encyclopedia)prejudice, unsubstantiated prejudgment of an individual or group, favorable or unfavorable in character, tending to action in a consonant direction. The hostility that prejudice can engender and the d...

nearsightedness

(Encyclopedia)nearsightedness or myopia, defect of vision in which far objects appear blurred but near objects are seen clearly. Because the eyeball is too long or the refractive power of the eye's lens is too stro...

bronchitis

(Encyclopedia)bronchitis brŏnkīˈtĭs [key], inflammation of the mucous membrane of the bronchial tubes. It can be caused by viral or bacterial infections or by allergic reactions to irritants such as tobacco smo...

antenna

(Encyclopedia)antenna ăntĕnˈə [key], in electronics, system of wires or other conductors used to transmit or receive radio or other electromagnetic waves (see radio); sometimes called an aerial. The idea of usi...

executors and administrators

(Encyclopedia)executors and administrators. An executor is the person designated in the will of a deceased person to carry out the provisions of the will. An administrator is the person appointed by a probate court...

resin

(Encyclopedia)resin, any of a class of amorphous solids or semisolids. Resins are found in nature and are chiefly of vegetable origin. They are typically light yellow to dark brown in color; tasteless; odorless or ...