acoustics
plural noun
acous·tics ə-ˈkü-stiks 
1
singular in construction : a science that deals with the production, control, transmission, reception, and effects of sound
2
also acoustic ə-ˈkü-stik : the qualities that determine the ability of an enclosure (such as an auditorium) to reflect sound waves in such a way as to produce distinct hearing
: the qualities that determine the ability of an enclosure (such as an auditorium) to reflect sound waves in such a way as to produce distinct hearing 
Example Sentences
Recent Examples on the Web And this business-casual vibe carried over into the music, which reached some thrilling heights throughout the night but never quite cracked through a flat surface, often a nonnegotiable compromise of amplified outdoor acoustics. 
Michael Andor Brodeur, Washington Post, 6 Aug. 2022 Besides being visually striking, the acoustics are exquisite. David L. Coddon, San Diego Union-Tribune, 25 Aug. 2022 On a recent visit, the acoustics were criminal and the spaghetti was a touch shy of al dente, but the Grasshopper, a play on the classic, creamy after-dinner drink, was spot on. Hannah Goldfield, The New Yorker, 29 July 2022 The scientists noted that their findings could be applied to problems in architectural acoustics, virtual reality, audio forensics, and more. Rachel Crowell, Scientific American, 28 June 2022 More along the lines of I’ve always had an interest in live sound, acoustics. Richard Webner, San Antonio Express-News, 11 May 2022 The hall is open, airy and intimate; the acoustics are immediate and even. San Diego Union-Tribune, 25 Apr. 2022 Does their technology support you in your home office, and does the technology in the office support participants who are both remote and in the office (think: easy access, large displays, good acoustics, etc.). Tracy Brower, Forbes, 12 June 2022 Adding to the building’s distinctive music focus is an emphasis on acoustics, one that Leiweke and his colleagues expect to keep tweaking. Natalie Weiner, Billboard, 2 May 2022 See More
Michael Andor Brodeur, Washington Post, 6 Aug. 2022 Besides being visually striking, the acoustics are exquisite. David L. Coddon, San Diego Union-Tribune, 25 Aug. 2022 On a recent visit, the acoustics were criminal and the spaghetti was a touch shy of al dente, but the Grasshopper, a play on the classic, creamy after-dinner drink, was spot on. Hannah Goldfield, The New Yorker, 29 July 2022 The scientists noted that their findings could be applied to problems in architectural acoustics, virtual reality, audio forensics, and more. Rachel Crowell, Scientific American, 28 June 2022 More along the lines of I’ve always had an interest in live sound, acoustics. Richard Webner, San Antonio Express-News, 11 May 2022 The hall is open, airy and intimate; the acoustics are immediate and even. San Diego Union-Tribune, 25 Apr. 2022 Does their technology support you in your home office, and does the technology in the office support participants who are both remote and in the office (think: easy access, large displays, good acoustics, etc.). Tracy Brower, Forbes, 12 June 2022 Adding to the building’s distinctive music focus is an emphasis on acoustics, one that Leiweke and his colleagues expect to keep tweaking. Natalie Weiner, Billboard, 2 May 2022 See More Word History
Etymology
acoust(ic) + -ics
First Known Use
1683, in the meaning defined at sense 1
Kids Definition
acoustics
noun plural
acous·tics ə-ˈkü-stiks
: the qualities in a room that affect how well a person in it can hear
Medical Definition
acoustics
noun, plural in form but singular in construction
acous·tics ə-ˈkü-stiks
: a science that deals with the production, control, transmission, reception, and effects of sound