दोनों तरफ से अवतल

Adjective:

दो कूब वाला, द्विअवतली, बाइकौनकेव, उभयावतल,

biconcave's Usage Examples:

biconcave lens.

C. Labyrinthodonta, with simple biconcave vertebral disks, very slightly pierced by a remnant of the notochord and supporting the loosely articulated neural arch.

Eurycormus), to biconcave centra, and finally to the socket-and-ball condition that prevails at the present day.

The first compound miscroscope (discovered probably by the Middelburg lens-grinders, Johann and Zacharias Janssen about 1590) was a combination of a strong biconvex with a still stronger biconcave lens; it had thus, as well as the first telescope, a negative eyepiece.

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.

- Biconcave, biconvex and concavo-convex (meniscus) lenses are employed in ophthalmic practice in the treatment of errors of refraction.

On the other hand the Odontotormae, as exemplified in Ichthyornis, having the primitive biconcave vertebrae, yet possessed the highly specialized feature of teeth in distinct sockets.

Enaliornis, England, vertebrae chiefly biconcave; Hesperornis, North America, vertebrae heterocoelous.

KoLA77, a hollow) or angulus lunularis, biconcave.

p. 344) a second fossil bird from the same locality was indicated as Ichthyornis dispar- from the fish-like, biconcave form of its vertebrae.

biconcave's Meaning':

concave on both sides

Synonyms:

concave, concavo-concave,

Antonyms:

convex, protrusive, gibbose,