biconcave

Example Sentences

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This batch provided an answer: He had hereditary spherocytosis, a disease in which the red blood cells were tiny spheres rather than the usual biconcave discs.

From New York Times • May 16, 2023

They are compact, flexible and shaped like biconcave disks, which helps them slip through narrow capillaries and gives them a high volume-to-surface area ration, so they can hold a lot of hemoglobin and oxygen.

From Scientific American • May 6, 2019

The viewer observes Mr. Jacobs’s teeming green worlds through a custom-ordered biconcave lens.

From New York Times • May 8, 2018

The biconcave shape also provides a greater surface area across which gas exchange can occur, relative to its volume; a sphere of a similar diameter would have a lower surface area-to-volume ratio.

From Textbooks • Jun. 19, 2013

The cervical and thoracic vertebrae seem to be biconcave; the cervical ribs are much reduced and were apparently still movable; the thoracic ribs are devoid of uncinate processes.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 4 "Aram, Eugene" to "Arcueil" by Various