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

A more reptilian character in the Ichthyornis group is the fact that, unlike any modern bird, but like their reptile ancestors, they had biconcave vertebrae.

From The Story of Evolution by McCabe, Joseph