ti·​o·​tro·​pi·​um ˌtī-ō-ˈtrō-pē-əm How to pronounce tiotropium (audio)
variants or tiotropium bromide
: an anticholinergic drug administered by oral inhalation in the form of its bromide C19H22NO4S2Br·H2O as a bronchodilator in the treatment of chronic obstructive pulmonary disease
Tiotropium is a once-daily, inhaled anticholinergic drug that provides at least 24-hour improvements in airflow and hyperinflation in patients with COPD.Donald P. Tashkin et al., The New England Journal of Medicine

Note: Tiotropium is marketed under the trademark Spiriva.

Dictionary Entries Near tiotropium

Cite this Entry

“Tiotropium.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/tiotropium. Accessed 31 Mar. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love It or Hate It

  • heart-fire
  • When asked about her blind date, Carol spoke for hours with vitriol.
Spell It

Hear a word and type it out. How many can you get right?

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?