Definition of acidophilus in US English:



  • A bacterium that is used to make yogurt and to supplement the intestinal flora.

    Lactobacillus acidophilus; a Gram-positive rod-shaped bacterium

    • ‘Eating plain yogurt with live bacteria cultures daily and taking garlic and acidophilus supplements can fend off future infections.’
    • ‘Your main defense against them is billions of acidophilus bacteria, your ‘good’ intestinal flora.’
    • ‘For instance, Lactobacillus acidophilus - a harmless bacterium that resides in your intestines - helps you digest food, destroys some disease-causing organisms and provides nutrients to your body.’
    • ‘Probiotic foods contain bacteria such as Lactobacillus acidophilus or Bifidobacterium, bacteria that are thought to be capable of surviving digestion, and of being introduced into the large intestine.’
    • ‘In the United States, Lactobacillus acidophilus is the probiotic that shows up most often in dairy products.’
    • ‘In my practice, I find that most bloated stomachs are caused by ‘bad’ bacteria in the gut, which you can combat by having a small pot a day of live natural yoghurt containing the probiotic bacteria lactobacilli, bifidus or acidophilus.’
    • ‘Acidophilus milk is a kind of soured milk which contains a culture of Lactobacillus acidophilus.’
    • ‘The use of Lactobacillus acidophilus and other probiotic bacteria to maintain intestinal health and good digestion is on the rise.’
    • ‘When my digestion was upset by the changing diet, she offered white rice and carrots to settle my stomach and pro-biotic supplements like acidophilus.’
    • ‘The most effective probiotic supplements contain L. acidophilus and B. bifidus and should be refrigerated.’
    • ‘A second study showed no difference in infection rates between women who ingested pasteurized yogurt and women who ingested yogurt that contained L. acidophilus.’
    • ‘The addition of Lactobacillus bifidus and Lactobacillus acidophilus to the diet supports flora colonization.’
    • ‘Another way to introduce friendly bacteria is by eating yogurt, which contains Lactobacillus acidophilus.’
    • ‘Eat yogurt that contains live, active cultures of Lactobacillus acidophilus, which prevent yeast from multiplying.’
    • ‘Look for a brand that contains six to eight strains of live organisms, including Lactobacillus acidophilus and Bifidobacter.’
    • ‘One commonly known probiotic, Lactobacillus acidophilus, is naturally present in foods such as yogurt, grains, and meat products.’
    • ‘L. acidophilus bacteria produce lactase in the gut, aiding in the digestion of dairy products.’
    • ‘However, certain bacteria - including the yogurt-dwelling L. acidophilus - are, in fact, good.’
    • ‘The dose was one cup daily of yogurt with live Lactobacillus acidophilus cultures.’
    • ‘We should all get into the habit of including yoghurt in our diet, especially organic yoghurt, and ideally also containing acidophilus, bifidus or lactobacillus bacteria to help keep your gut's bacterial balance in top form.’


1920s: modern Latin, literally ‘acid-loving’.