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Longman Dictionary of Contemporary English
antacid
noun
EXAMPLES FROM CORPUS
▪ Apart from antacids none of the patients had taken any medical treatment during the 14 days before their initial endoscopy.
▪ Drugs such as anticoagulants, antacids, barbiturates, alcohol and tobacco may increase the likelihood of the condition developing.
▪ Importantly, prophylaxis against stress ulcers with H 2 antagonists and antacids has been implicated in abnormal bacterial overgrowth in the stomach.
▪ Indigestion had been a problem since early adulthood, but was controlled with antacids.
▪ It also occurs in alcoholism, diabetic ketoacidosis, and in patients taking antacids which bind phosphate in the gut.
▪ It is known to develop in individuals with peptic disease who ingest large amounts of calcium-carbonate-based antacids.
▪ Magnesium hydroxide, normally used as an antacid or laxative, may also serve as a magnesium supplement.
▪ The hypercalcemia is easily treatable by hydration and withdrawal of the calcium containing antacids.
The Collaborative International Dictionary
antacid

Buffer \Buff"er\ (b[u^]f"[~e]r), n. [Prop a striker. See Buffet a blow.]

  1. (Mech.)

    1. 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.

    2. A pad or cushion forming the end of a fender, which receives the blow; -- sometimes called buffing apparatus.

  2. One who polishes with a buff.

  3. A wheel for buffing; a buff.

  4. A good-humored, slow-witted fellow; -- usually said of an elderly man. [Colloq.]
    --Dickens.

  5. (Chem.) a substance or mixture of substances which can absorb or neutralize a certain quantity of acid or base and thus keep the degree of acidity or alkalinity of a solution (as measured by pH) relatively stable. Sometimes the term is used in a medical context to mean antacid.

  6. (Computers) a data storage device or portion of memory used to temporarily store input or output data until the receiving device is ready to process it.

  7. any object or person that shields another object or person from harm, shock, or annoyance; as, the President's staff is his buffer from constant interruptions of his work.

Douglas Harper's Etymology Dictionary
antacid

1732, adjective and noun, medical hybrid from anti- + acid.

Wiktionary
antacid

a. counteract or neutralizing acidity, especially in the stomach. n. An agent that counteracts or neutralizes acidity, especially in the stomach.

WordNet
antacid
  1. adj. acting to neutralize acid (especially in the stomach)

  2. n. an agent that counteracts or neutralizes acidity (especially in the stomach) [syn: gastric antacid, alkalizer, alkaliser, antiacid]

Wikipedia
Antacid

An antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn, indigestion or stomach upset.

Usage examples of "antacid".

Glumly he dug the large bottle out of his pocket, pried off the lid, and poured a fistful of antacid tablets into his palm.

He reached for the bottle of liquid antacid that sat on the dresser, opened it, tilted it, and drank deeply.

Patting his pockets, he found some antacid tablets and popped a couple into his mouth.

Remembering the alarm and what it signaled, she leaned through the car window, grabbed her black leather Chanel purse off the car seat, pulled an antacid bottle from its depths, and popped two of the tablets into her mouth.

She threw the rest of her things into the bag, took two antacid tablets, and headed out the door to her car.

Back in the bedroom, she retrieved two antacid tablets from her purse and downed them.

She punched the button, then reached for her purse and the antacid tablets.

Curry played havoc with her digestive system and even as she ate it, enjoying the flavor, she made a mental note to take an antacid later.

Reaching into his pocket, Nate pulled out a roll of antacids and popped a couple into his mouth.

A conclusion that sent Harold Smith scrambling for his green wastebasket and fumbling to his desktop an assortment of aspirins, antacids and other remedies.

Her need for antacids had curtailed since spring and the imagined ulcer that inspired them seemed to be back.

I prescribed a kaolin antacid mixture to be given night and morning and left the house in a confident frame of mind.

AT THE OTHER END of the hall in the KEFT executive offices, Desmond LeRoy reached into his desk drawer, found a bottle of antacid tab leto and shook out two.

As the induction helmet automatically retracted, he rummaged through the swingarm pharmacopoeia for a trank and an antacid.

Tyler chewed an antacid tablet, grimacing at the familiar chalky taste.