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The central keel-bearing part of the sternum in birds.

Parted with unwillingly or unintentionally; not to be found; missing; as, a lost book or sheep.

Lowest.

A peculiar disease of the bones, in consequence of which they become softened and capable of being bent without breaking.

Having soft jaws without teeth, as certain fishes.

A subclass of Crustacea, including Arthrostraca and Thoracostraca, or all those higher than the Entomostraca.

One of the Malacostraca.

That branch of zoölogical science which relates to the crustaceans; -- called also carcinology.

Belonging to the Malacostraca.

A tree of the East Indies of the genus Garcinia (G. Mangostana). The tree grows to the height of eighteen feet, and bears fruit also called mangosteen, of the size of a small apple, the pulp of which is very delicious food.

The mediostapedial part of the columella.

Having fever stamens than the parts of the corolla.

Stoppage of the mences.

Same as Menostasis.

A class of Arthropoda, allied to the Crustacea. It includes the trilobites, Eurypteroidea, and Limuloidea. All are extinct except the horseshoe crabs of the last group. See Limulus.

A product of metabolic action.

Of or pertaining to the mesosternum.

The middle portion, or body, of the sternum.

The postero-lateral ossification in the sternum of birds; also, the part resulting from such ossification.

One of a group of mammals having a small size as a typical characteristic. It includes the lower orders, as the Insectivora, Cheiroptera, Rodentia, and Edentata.