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English definition of “neutral”

neutral

adjective (SCIENCE)    /ˈnjuː.trəl/ US  /ˈnuː-/
describes a chemical substance that is neither an acid nor an alkali: Pure water is neutral and has a pH of 7.Types of chemicalSpecific chemicals, chemical compounds and gasesSubstances and structures in the body describes an object in physics that has no electrical charge: Atoms consist of positively-charged protons, negatively-charged electrons and neutral particles called neutrons.The state of matter
(Definition of neutral adjective (SCIENCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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