air sac

noun

Definition of air sac

1 : one of the air-filled spaces in the body of a bird connected with the air passages of the lungs
3 : a thin-walled dilation of a trachea occurring in many insects

Examples of air sac in a Sentence

Recent Examples on the Web As Mayo Clinic states, double pneumonia is an infection that inflames the air sacs in both lungs. Kayla Keegan, Good Housekeeping, "'The View' Star Meghan McCain LOST It After Whoopi Goldberg Returned to Give a Health Update," 14 Mar. 2019 As Mayo Clinic states, double pneumonia is an infection that inflames the air sacs in both lungs. Kayla Keegan, Good Housekeeping, "'The View' Star Meghan McCain LOST It After Whoopi Goldberg Returned to Give a Health Update," 14 Mar. 2019 As Mayo Clinic states, double pneumonia is an infection that inflames the air sacs in both lungs. Kayla Keegan, Good Housekeeping, "'The View' Star Meghan McCain LOST It After Whoopi Goldberg Returned to Give a Health Update," 14 Mar. 2019 As Mayo Clinic states, double pneumonia is an infection that inflames the air sacs in both lungs. Kayla Keegan, Good Housekeeping, "'The View' Star Meghan McCain LOST It After Whoopi Goldberg Returned to Give a Health Update," 14 Mar. 2019 As Mayo Clinic states, double pneumonia is an infection that inflames the air sacs in both lungs. Kayla Keegan, Good Housekeeping, "'The View' Star Meghan McCain LOST It After Whoopi Goldberg Returned to Give a Health Update," 14 Mar. 2019 As Mayo Clinic states, double pneumonia is an infection that inflames the air sacs in both lungs. Kayla Keegan, Good Housekeeping, "'The View' Star Meghan McCain LOST It After Whoopi Goldberg Returned to Give a Health Update," 14 Mar. 2019 As Mayo Clinic states, double pneumonia is an infection that inflames the air sacs in both lungs. Kayla Keegan, Good Housekeeping, "'The View' Star Meghan McCain LOST It After Whoopi Goldberg Returned to Give a Health Update," 14 Mar. 2019 As Mayo Clinic states, double pneumonia is an infection that inflames the air sacs in both lungs. Kayla Keegan, Good Housekeeping, "'The View' Star Meghan McCain LOST It After Whoopi Goldberg Returned to Give a Health Update," 14 Mar. 2019

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.

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First Known Use of air sac

circa 1805, in the meaning defined at sense 1

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Time Traveler for air sac

The first known use of air sac was circa 1805

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More Definitions for air sac

air sac

noun

Kids Definition of air sac

: one of the small pouches in the lungs where oxygen and carbon dioxide are exchanged

air sac

noun

Medical Definition of air sac

More from Merriam-Webster on air sac

Britannica.com: Encyclopedia article about air sac

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