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

    • ‘However, certain bacteria - including the yogurt-dwelling L. acidophilus - are, in fact, good.’
    • ‘A second study showed no difference in infection rates between women who ingested pasteurized yogurt and women who ingested yogurt that contained L. acidophilus.’
    • ‘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.’
    • ‘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 addition of Lactobacillus bifidus and Lactobacillus acidophilus to the diet supports flora colonization.’
    • ‘In the United States, Lactobacillus acidophilus is the probiotic that shows up most often in dairy products.’
    • ‘The use of Lactobacillus acidophilus and other probiotic bacteria to maintain intestinal health and good digestion is on the rise.’
    • ‘L. acidophilus bacteria produce lactase in the gut, aiding in the digestion of dairy products.’
    • ‘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.’
    • ‘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.’
    • ‘The dose was one cup daily of yogurt with live Lactobacillus acidophilus cultures.’
    • ‘Eating plain yogurt with live bacteria cultures daily and taking garlic and acidophilus supplements can fend off future infections.’
    • ‘Another way to introduce friendly bacteria is by eating yogurt, which contains Lactobacillus acidophilus.’
    • ‘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.’
    • ‘Eat yogurt that contains live, active cultures of Lactobacillus acidophilus, which prevent yeast from multiplying.’
    • ‘Your main defense against them is billions of acidophilus bacteria, your ‘good’ intestinal flora.’
    • ‘Acidophilus milk is a kind of soured milk which contains a culture of Lactobacillus acidophilus.’
    • ‘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.’
    • ‘The most effective probiotic supplements contain L. acidophilus and B. bifidus and should be refrigerated.’


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