1. Neutralizing an acid. 2. Any agent that reduces or neutralizes acidity, as of the gastric juice or any other secretion ( e.g., calcium carbonate, magnesium hydroxide). SYN: antiacid.

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ant·ac·id (')ant-'as-əd also an·ti·ac·id .ant-ē-'as-əd, .an-.tī- adj tending to counteract acidity
antacid also antiacid n an agent (as an alkali or absorbent) that counteracts or neutralizes acidity

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a drug that neutralizes the hydrochloric acid secreted in the digestive juices of the stomach. Antacids, which include aluminium hydroxide, calcium carbonate, magnesium hydroxide, and sodium bicarbonate, are used to relieve pain and discomfort in disorders of the digestive system, including peptic ulcer.

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ant·ac·id (ant-asґid) [ant- + acid] 1. counteracting acidity. 2. a substance that counteracts or neutralizes acidity, usually of the stomach.

Medical dictionary. 2011.

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Look at other dictionaries:

  • antacid — [ant΄as′id] adj. [ ANT(I) + ACID] that neutralizes acids; counteracting acidity n. an antacid substance, such as sodium bicarbonate …   English World dictionary

  • Antacid — Ant*ac id, n. [Pref. anti + acid.] (Med.) A remedy for acidity of the stomach, as an alkali or absorbent. a. Counteractive of acidity. [1913 Webster] …   The Collaborative International Dictionary of English

  • antacid — 1732, adjective and noun, medical hybrid from ANTI (Cf. anti ) + ACID (Cf. acid) …   Etymology dictionary

  • antacid — antàcīd m <G mn antacída> DEFINICIJA farm. sredstvo koje neutralizira ili veže višak kiseline u želucu ETIMOLOGIJA anti + lat. acidus: kiseo …   Hrvatski jezični portal

  • antacid — ► ADJECTIVE ▪ preventing or correcting acidity in the stomach …   English terms dictionary

  • Antacid — A spilled bottle of antacid tablets An antacid is a substance which neutralizes stomach acidity. Contents 1 Mechanism of action …   Wikipedia

  • antacid — /ant as id/, adj. 1. preventing, neutralizing, or counteracting acidity, as of the stomach. n. 2. an antacid agent. [1725 35; ANT + ACID] * * * Any substance, such as sodium bicarbonate, magnesium hydroxide, or aluminum hydroxide, used to relieve …   Universalium

  • antacid — UK [æntˈæsɪd] / US noun [countable] Word forms antacid : singular antacid plural antacids a medicine that reduces the amount of acid in your stomach …   English dictionary

  • antacid — Buffer Buff er (b[u^]f [ e]r), n. [Prop a striker. See {Buffet} a blow.] 1. (Mech.) (a) An elastic apparatus or fender, for deadening the jar caused by the collision of bodies; as, a buffer at the end of a railroad car. (b) A pad or cushion… …   The Collaborative International Dictionary of English

  • antacid — noun Date: 1732 an agent that counteracts or neutralizes acidity • antacid adjective …   New Collegiate Dictionary

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