Meanings of concavo-concave in English

The vertebræ of its backbone are not biconcave, but flat in front and behind.

They had biconcave vertebræ, ambulatory limbs, and a well-developed pelvis and shoulder girdle.

The Mesozoic Lepidosteidae, again, have, at most, biconcave vertebrae, while the existing 'Lepidosteus' has Salamandroid, opisthocoelous, vertebrae.

These changes include an increase in shear resistance, loss of surface area, and acquisition of a biconcave shape.

Mammalian erythrocytes undergo a unique maturation process in which they discard their nuclei and organelles and assume a flexible biconcave shape.