Recent Examples of air sac from the Web
Birds are also light because much of their insides are filled with air due to extensive space-filling air sacs which are part of their exceptionally efficient respiratory system.
Daniel, a 12-year-old Bornean orangutan, was dealing with a sinus infection that left him with labored breathing, coughing, frequent mucous production and a distended air sac, the Phoenix Zoo said in a media release.
Influenza can develop into pneumonia, an infection that causes the lungs' air sacs to become inflamed and fill with fluid.
The kiwi chick sticks its bill into an air sac at the top of the egg, and starts to squeak.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'air sac.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
AIR SAC Defined for Kids
Learn More about air sac
Britannica.com: Encyclopedia article about air sac
Seen and Heard
What made you want to look up air sac? Please tell us where you read or heard it (including the quote, if possible).